![SV Aa Harvald Prediction of Ship Resista [PDF]](https://pdfs.asia/img/200x200/sv-aa-harvald-prediction-of-ship-resista.jpg)
4 0 654 KB
Nama Kelas Nrp referensi
Mohammad Zakky Prasanta D3 ME B 315030046 Sv.Aa.Harvald, Resistance and Propulsion of ship ; Edward V. Lewis. Principles of N David G.M. Watson, Practical Ship Design. Tugas Perhitungan Tahanan Kapal (metode Guldhammer and Harvald) I.Data Kapal Dimension Tipe kapal Lpp Lwl B H T Vs
A.H.T 84.99 meter 89 meter 13.17 meter 7.15 meter 5.95 meter 11 knot
Coofisien Cb Cbwl Cp Cwp ρ air laut g = 5.65884 m/s 32.0224701
0.734 0.7015593792 0.715 0.898 1.025 9.81 m2/s
viskositas air laut ρ air udara (27^0 Celsius)
Luas kompartemen bagian d
1. Menghitung L displacement 6. Menghitung nilai Froude Number (Fn) 1/2*(Lpp+Lwl) Vs/√g x Lwl 86.955 meter = 285.285442 feet 0.1915989762 ("Sv.Aa.Harvald,5.5.10, Resistance and Propulsion of ship". Page.117) ("Sv.Aa.Harvald,5.5.9, Resis 2. Menghitung Speed Length Ratio 7. Menghitung Reynold Number (Rn) Vs/√Ldisp Vs x Lwl/vk 0.335033 568762351.98 (Handout mata kuliah Tahanan dan propulsi kapal) (Edward V. Lewis. Principle 3. Menghitung Volume displacement (▼) 8. Menghitung Koofisien Gesek (Cf) Cb x Lwl x B x T 0,075/(logRn-2)^2 5114.442 0.0016436882 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald,5.5.14, Res 4. Menghitung Berat displacement (▲) 9. Menghitung Koofisien Tahanan Sisa (Cr) ▼x ρ air laut Lwl/▼^0,333 5242.303 5.1609943249 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald, Resistance 5. Menghitung Luas Permukaan Basah (S) 9.1 Interpolasi Diagram ρ air laut x Lpp((CbxB)+(1.7*T)) 10³Cr 1723.2848 m^2 5.00 0.90 ("Sv.Aa.Harvald,5.5.31, Resistance and 5.16 Propulsion of ship". Page.131) 1.57 5.50 0.80 ("Sv.Aa.Harvald,5.5.24, Resistance and Propulsion of ship". 10. Menghitung Koreksi B/T B/T = 2.2134453782 10³Cr2 10³Cr2 Cr2
= 10³Cr1−0,16x(B/T−2,5) = 1.6136498745 = 0.0016136499
11. Menghitung Koreksi Cr terhadap LCB LCB (8,80-38,9 x Fn)/100
0.0134679983 -0.0134679983
Penentuan LCB normal dengan grafik LCB Standart yang ad Resistance and Propulsion of ship". Page.128) %LCB standard = 0.55 LCB kapal = -0.0055013468 % koreksi terhadap harga Cr 10³Crstandard = 0.0007407399 10³Cr3 = 0.0006971036 Cr3 =2.922556E-06
12. Menghitung Koreksi Cr karena adanya anggota bada
Power and Propulsion of Ship 1. Menghitung Efective Horse Power (EHP) EHP (PE) RT dinas x v 403.85743 kW 541.58165 HP
10³Cr4 Cr4
=10³Cr2 + (0.05 x 10³Cr2) =0.0016943324
Cr total
= 4.878706E-06
k k D 1 kW Pitch
1,3 - 1,5
=
1.3 3.57 1.34102 0.7
541.5816 ("Sv.Aa.Harvald, 6.2.1, Resistance and Prop
2. Menghitung Wake fraction (w) Menghitung koofisien viskositas (Cv) Cv (1 + k)CF + CA 0.0042862 ("Edward V. Lewis. Principles of Naval Arch w
0.3 x CB + [(10 x CV x CB ) - 0.1 0.1516608 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2
3. Menghitung Thurst Deduction fraction (t) t kxw 0.197159 ("Edward V. Lewis.47, Principles of Naval Architecture Vol.2
t ( untuk single screw)
=
0.1 0.1 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2
4. Menghitung Speed of Advance (Va) Va (1-w) Vs 4.8006159 m/s 9.3317314 knot
4.800616 9.331731 ("Edward V. Lewis, Principles of Naval Arch
additional calculation of wake factor (wf) wf = 1.06 x - (0,4 x Cb) 0.311216 (for twin screw) ("Dave Gerr, Propeller Handbook, formula 6-4a, b, page 69
Determine of "n (rpm)" value
163.877958 Vs V. Lewis. Principles of Naval Architecture ; Dave Gerr,Propeller Handbook.
kositas air laut
14 15 16 17 18 19 20
8.847E-07
r udara (27^0 Celsius)
0.0012
s kompartemen bagian depan
248.3 m^2 (metode autocad)
v.Aa.Harvald,5.5.9, Resistance and Propulsion of ship". Page.116)
ward V. Lewis. Principles of Naval Architecture, page 57)
13. Menghitung Koofisien Tahanan Tambahan (Ca) Dari perhitungan awal diperoleh displasmen ka jika melihat daftar pada "Sv.Aa.Harvald, Resist adalah sebagai berikut : Interpolasi Ca ▲ = 1000 ton, ▲ = 5242.303011 ton, ▲ = 10000 ton, ▲ = 100000 ton, ▲ = 1000000 ton,
v.Aa.Harvald,5.5.14, Resistance and Propulsion of ship". Page.117)
v.Aa.Harvald, Resistance and Propulsion of ship". Page.120-128) 10³Cr1 = Cr1 =
1.56780114 0.0015678
and Propulsion of ship". Page.130)
14. Menghitung Koofisien Tahanan Udara dan Kemudi koofisien tahanan udara 10³CAA = 0.07 CAA = 0.00007 koofisien tahanan kemudi 10³CAS = 0.04 CAS = 0.00004
Figure 5.5.5 15. TAHANAN TOTAL KAPAL Koofisien tahanan total di air CT =CF + CR + CA + CAS CT = 0.002194294
Cr1−0,16x(B/T−2,5)
0-38,9 x Fn)/100
Koofisien tahanan total di udara CT = 0.00007 Tahanan Total (RT)
meter meter
RT air RT air
(dibelakang Φ)
ik LCB Standart yang ada di ebook ("Sv.Aa.Harvald ,5.5.15 , Page.128) LCB standard = 0.74073991 (dibelakang Φ Kapal) ∆LCB -0.0021818
=CT x (0.5 x ρ x v^2 x S) = 62.05838769 kN
RT udara = CT udara x 0.5 x ρ udara x v^2 x luasan RT udara = 0.00033395 kN RT Total
= RT udara + RT udara 62.05872164 kN 62.05872164 Tahanan Total kondisi pelayaran dinas RT dinas = RT Total + (15%RT Total) 71.36752989 kN
na adanya anggota badan kapal 71.36752989
Cr2 + (0.05 x 10³Cr2)
(single screw)
("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 160")
meter HP
1 HP
=
0.7457 kW
2.1, Resistance and Propulsion of ship". Page.133)
Principles of Naval Architecture Vol.2, page 162")
Naval Architecture Vol.2, page 163")
Interpolasi nilai w Cb w (twin screw) 0.5 -0.038 0.537 -0.02542 0.55 -0.021 ("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 158")
Naval Architecture Vol.2, page 159")
Naval Architecture Vol.2, page 163")
Principles of Naval Architecture Vol.2, fig.21, page 161")
ormula 6-4a, b, page 69.")
BHP
Rt sea margin 71.3675298877 82.4245126172 93.22373412 104.6571467583 #REF! #REF! #REF!
Service Speed (knot) vs Ship Resistance (kN ) 120 100 80 60 40 20 0 13
14
15
16
17
Tambahan (Ca) al diperoleh displasmen kapal sebesar = 5242.303 ton da "Sv.Aa.Harvald, Resistance and Propulsion of ship". Page.292 (9.5.1)
Ca Ca Ca Ca Ca
= = = = =
0.0006 0.0005057 0.0004 0 -0.0006
Udara dan Kemudi
("Sv.Aa.Harvald ,5.5.26 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.27 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.29 , Resistance and Propulsion of ship". Page.131)
18
19
20
21
x ρ x v^2 x S)
0.5 x ρ udara x v^2 x luasan kompartemen bagian depan
isi pelayaran dinas (15%RT Total) ("Sv.Aa.Harvald ,5.5.28 , Resistance and Propulsion of ship". Page.131)
5. Menghitung Efisiensi propulsif 5.1 efisiensi relative rotative (ηrr) ηrr = 1 1 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2
5.2 efisiensi Open Water (ηo) ηo = 0.7
("Edward V. Lewis, Principles of Naval Architecture Vol.2, p
re Vol.2, page 158")
5.3 efisiensi Hull (ηH) ηH (1 - t)/(1 - w) 1.0608964 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, p
5.4 Menghitung Koofisien propulsif (Pc) Pc ηrr x ηo x ηH 0.7426275 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, p
6. Menghitung Delivered Horse Power (DHP) DHP EHP/ηp 773.6881 773.68806 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, p
7. Menghitung Thrust Horse Power (THP) THP =EHP/ηH 510.4944 510.49439 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, p 8. Menghitung Shaft Horse Power (SHP) SHP =DHP/ηs ηb 805.9251 805.92507 HP 600.97832 kW
ηb =ηRR x ηo 0.7 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, p
9. Menghitung Power Main Engine
T(thrust) =
ηG BHP Scr = SHP/ηG 822.37252 HP
967.4971
BHP Mcr =BHP Scr /0.8 967.49708 HP 721.46257 kW BHP total BHP >SHP >DHP THP >EHP 967.49708 805.92507 773.68806 510.49439 541.58165
)
20
21
f Naval Architecture Vol.2, page 163")
ηp
=
0.7
Interpolation of Pitch Ratio Speed (knot 10 14
22.5 P/D
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 156")
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 120")
aval Architecture Vol.2, page 120")
ηs = aval Architecture Vol.2, page 120")
773.68806 1127.825167
EHP/(1-t) x Vs 3405.2488 0.98 (assumption)
1112.6216 HP 829.68196 kW
0.98
Interpolation of Pitch Ratio value Pitch Ratio (P/D) 0.85 0.898
1 0.85 + [(1-0.85)/(22.5-10)] x (14-10) 0.898 “Dave Gerr, Propeller Handbook, chart 5-4, Optimum Pitch Ratio, on page 55”
product Engine Brand Engine Model
Engine Serial Engine arrangement Power Output N Manufacture date Governor Condition Description Air Cleaner Fly wheel housing size Cooling Alternator Starter Tier rating
Carterpillar 3508B
7SM00101 100-8316 2 x 500 HP 1600 rpm 1997 Electronic High Hour Runner
Dry type SAE0 Keel Cooled 24 volt Alternator 24 volt Electric Starter 1
Nama Kelas Nrp referensi
Jadug Priambodo D3 ME B 315030064 Sv.Aa.Harvald, Resistance and Propulsion of ship ; Edward V. Lewis. Principles of Nav David G.M. Watson, Practical Ship Design. Tugas Perhitungan Tahanan Kapal (metode Guldhammer and Harvald) I.Data Kapal Dimension Tipe kapal Lpp Lwl B H T Vs
A.H.T 70.2 meter 72.389 meter 11.5 meter 5.4 meter 3.813 meter 15 knot
=
Coofisien Cb Cbwl Cp Cwp ρ air laut g 7.7166 m/s
0.705 0.68 0.715 0.803 1.025 9.81 m2/s
viskositas air laut ρ air udara (27^0 Celsius)
Luas kompartemen bagian depa
1. Menghitung L displacement 6. Menghitung nilai Froude Number (Fn) 1/2*(Lpp+Lwl) Vs/√g x Lwl 71.2945 meter = 233.905847 feet 0.2895710869 ("Sv.Aa.Harvald,5.5.10, Resistance and Propulsion of ship". Page.117) ("Sv.Aa.Harvald,5.5.9, Resistan 2. Menghitung Speed Length Ratio 7. Menghitung Reynold Number (Rn) Vs/√Ldisp Vs x Lwl/vk 0.5045514 631397035.61 (Handout mata kuliah Tahanan dan propulsi kapal) (Edward V. Lewis. Principles of 3. Menghitung Volume displacement (▼) 8. Menghitung Koofisien Gesek (Cf) Cb x Lwl x B x T 0,075/(logRn-2)^2 2237.8261 0.001621828 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald,5.5.14, Resista 4. Menghitung Berat displacement (▲) 9. Menghitung Koofisien Tahanan Sisa (Cr) ▼x ρ air laut Lwl/▼^0,333 2293.7718 5.534314158 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald, Resistance and 5. Menghitung Luas Permukaan Basah (S) 9.1 Interpolasi Diagram ρ air laut x Lpp((CbxB)+(1.7*T)) 10³Cr 1049.7947 m^2 4.00 1.60 ("Sv.Aa.Harvald,5.5.31, Resistance and 4.27 Propulsion of ship". Page.131) 1.41 4.50 1.25 ("Sv.Aa.Harvald,5.5.24, Resistance and Propulsion of ship". Pa 10. Menghitung Koreksi B/T B/T = 3.0159979019 10³Cr2 10³Cr2 Cr2
= 10³Cr1−0,16x(B/T−2,5) = 1.3284403357 = 0.0013284403
11. Menghitung Koreksi Cr terhadap LCB LCB (8,80-38,9 x Fn)/100 -0.0246431528 0.0246431528
Penentuan LCB normal dengan grafik LCB Standart yang ada d Resistance and Propulsion of ship". Page.128) %LCB standard = 0.55 LCB kapal = -0.0054975357 % koreksi terhadap harga Cr 10³Crstandard = -0.0013553734 10³Cr3 =-0.0053475642 Cr3 =-5.347564E-06
12. Menghitung Koreksi Cr karena adanya anggota badan k
Power and Propulsion of Ship
10³Cr4 Cr4
=10³Cr2 + (0.05 x 10³Cr2) =0.0013948624
Cr total
= 0.000004129
k k D 1 kW
0.7 - 0.9 0.8 2.7 1.34102
Pitch 1. Menghitung Efective Horse Power (EHP) EHP (PE) RT dinas x v 636.03699 kW 852.93951 HP
=
0.7
("Sv.Aa.Harvald, 6.2.1, Resistance and Propuls
2. Menghitung Wake fraction (w) Menghitung koofisien viskositas (Cv) Cv (1 + k)CF + CA 0.0034905 ("Edward V. Lewis. Principles of Naval Architec w
0.3095 x CB + [(10 x CV x CB ) - (0.32 x D/√B x T)] 0.0702038 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa
3. Menghitung Thurst Deduction fraction (t) t kxw 0.056163 ("Edward V. Lewis.47, Principles of Naval Architecture Vol.2, pa
t ( untuk twin screw)
= 0.325 x CB - (0.1885 x D/√B x T) 0.1069348221 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa
4. Menghitung Speed of Advance (Va) Va (1-w) Vs 7.1748657 m/s 13.946944 knot
("Edward V. Lewis, Principles of Naval Architec
additional calculation of wake factor (wf) wf = 1.06 x - (0,4 x Cb) 0.29892 (for twin screw) ("Dave Gerr, Propeller Handbook, formula 6-4a, b, page 69.")
Determine of "n (rpm)" value
163.877958 V. Lewis. Principles of Naval Architecture ; Dave Gerr,Propeller Handbook.
kositas air laut
r udara (27^0 Celsius)
8.847E-07 0.0012
s kompartemen bagian depan
149.84 m^2 (metode autocad) 5.2110735 2659.2 6417.91 17.0665063 1572.21 6372.08 10.0182479 13. Menghitung Koofisien Tahanan Tambahan (Ca) Dari perhitungan awal diperoleh displasmen kapal jika melihat daftar pada "Sv.Aa.Harvald, Resistance v.Aa.Harvald,5.5.9, Resistance and Propulsion of ship". Page.116) adalah sebagai berikut : Interpolasi Ca ▲ = 1000 ton, ▲ = 2293.771779 ton, ward V. Lewis. Principles of Naval Architecture, page 57) ▲ = 10000 ton, ▲ = 100000 ton, ▲ = 1000000 ton,
v.Aa.Harvald,5.5.14, Resistance and Propulsion of ship". Page.117)
v.Aa.Harvald, Resistance and Propulsion of ship". Page.120-128) 10³Cr1 = Cr1 =
1.411 0.001411
and Propulsion of ship". Page.130)
14. Menghitung Koofisien Tahanan Udara dan Kemudi koofisien tahanan udara 10³CAA = 0.07 CAA = 0.00007 koofisien tahanan kemudi 10³CAS = 0.04 CAS = 0.00004
Figure 5.5.5 15. TAHANAN TOTAL KAPAL Koofisien tahanan total di air CT =CF + CR + CA + CAS CT = 0.002237206
Cr1−0,16x(B/T−2,5) Koofisien tahanan total di udara
CT
0-38,9 x Fn)/100 meter meter
=
0.00007
Tahanan Total (RT) RT air =CT x (0.5 x ρ x v^2 x S) RT air = 71.67311449 kN
(dibelakang Φ)
ik LCB Standart yang ada di ebook ("Sv.Aa.Harvald ,5.5.15 , Page.128) LCB standard = -1.3553734 (dibelakang Φ Kapal) ∆LCB 0.00399219
RT udara = CT udara x 0.5 x ρ udara x v^2 x luasan ko RT udara = 0.000374739 kN RT Total
= RT udara + RT udara 71.67348923 kN
Tahanan Total kondisi pelayaran dinas RT dinas = RT Total + (15%RT Total) 82.42451262 kN
na adanya anggota badan kapal
Cr2 + (0.05 x 10³Cr2)
(twin screw)
("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 160")
meter HP
1 HP
=
0.7457 kW
2.1, Resistance and Propulsion of ship". Page.133)
Principles of Naval Architecture Vol.2, page 162")
Naval Architecture Vol.2, page 163")
Naval Architecture Vol.2, page 159")
Naval Architecture Vol.2, page 163")
Principles of Naval Architecture Vol.2, fig.21, page 161")
ormula 6-4a, b, page 69.")
Interpolasi nilai w Cb w (twin screw) 0.5 -0.038 0.537 -0.02542 0.55 -0.021 ("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 158")
Tambahan (Ca) al diperoleh displasmen kapal sebesar = 2293.7718 ton da "Sv.Aa.Harvald, Resistance and Propulsion of ship". Page.292 (9.5.1)
Ca Ca Ca Ca Ca
= = = = =
0.0006 0.0005712 0.0004 0 -0.0006
Udara dan Kemudi
("Sv.Aa.Harvald ,5.5.26 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.27 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.29 , Resistance and Propulsion of ship". Page.131)
x ρ x v^2 x S)
0.5 x ρ udara x v^2 x luasan kompartemen bagian depan
isi pelayaran dinas (15%RT Total) ("Sv.Aa.Harvald ,5.5.28 , Resistance and Propulsion of ship". Page.131)
re Vol.2, page 158")
5. Menghitung Efisiensi propulsif 5.1 efisiensi relative rotative (ηrr) ηrr =0.9737+0.111 (Cp-0.0255LCB)+(-0.06325 P/D) 1.0466906 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa 5.2 efisiensi Open Water (ηo) ηo = 0.7
("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
5.3 efisiensi Hull (ηH) ηH (1 - t)/(1 - w) 0.9604956 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
5.4 Menghitung Koofisien propulsif (Pc) Pc ηrr x ηo x ηH 0.7037392 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
6. Menghitung Delivered Horse Power (DHP) DHP EHP/ηp 1164.131 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
7. Menghitung Thrust Horse Power (THP) THP =EHP/ηH 888.02024 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page 8. Menghitung Shaft Horse Power (SHP) SHP =DHP/ηs ηb 1557.0823 HP 1161.1163 kW
ηb =ηRR x ηo 0.73268343 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
9. Menghitung Power Main Engine
T(thrust) =
ηG
BHP Scr = SHP/ηG 1588.8595 HP BHP Mcr =BHP Scr /0.8 1869.2465 HP 1393.8971 kW BHP >SHP >DHP THP >EHP 1869.2465 1557.0823 1164.131 888.02024 852.93951
ηp
f Naval Architecture Vol.2, page 163")
=
0.7326834298
Interpolation of Pitch Ratio va Speed (knot 10 14 22.5 P/D
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 156")
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 120")
aval Architecture Vol.2, page 120")
ηs = aval Architecture Vol.2, page 120")
EHP/(1-t) x Vs 7369.891 0.98 (assumption)
0.98
Interpolation of Pitch Ratio value Pitch Ratio (P/D) 0.85 0.898 1 0.85 + [(1-0.85)/(22.5-10)] x (14-10) 0.898 “Dave Gerr, Propeller Handbook, chart 5-4, Optimum Pitch Ratio, on page 55”
product Engine Brand Engine Model Engine Serial Engine arrangement Power Output N Manufacture date Governor Condition Description Air Cleaner Fly wheel housing size Cooling Alternator Starter Tier rating
Carterpillar 3508B 7SM00101 100-8316 2 x 500 HP 1600 rpm 1997 Electronic High Hour Runner
Dry type SAE0 Keel Cooled 24 volt Alternator 24 volt Electric Starter 1
Nama Kelas Nrp referensi
Jadug Priambodo D3 ME B 315030064 Sv.Aa.Harvald, Resistance and Propulsion of ship ; Edward V. Lewis. Principles of Nav David G.M. Watson, Practical Ship Design. Tugas Perhitungan Tahanan Kapal (metode Guldhammer and Harvald) I.Data Kapal Dimension Tipe kapal Lpp Lwl B H T Vs
A.H.T 70.2 meter 72.389 meter 11.5 meter 5.4 meter 3.813 meter 16 knot
=
Coofisien Cb Cbwl Cp Cwp ρ air laut g 8.23104 m/s
0.705 0.68 0.715 0.803 1.025 9.81 m2/s
viskositas air laut ρ air udara (27^0 Celsius)
Luas kompartemen bagian depa
1. Menghitung L displacement 6. Menghitung nilai Froude Number (Fn) 1/2*(Lpp+Lwl) Vs/√g x Lwl 71.2945 meter = 233.905847 feet 0.3088758261 ("Sv.Aa.Harvald,5.5.10, Resistance and Propulsion of ship". Page.117) ("Sv.Aa.Harvald,5.5.9, Resistan 2. Menghitung Speed Length Ratio 7. Menghitung Reynold Number (Rn) Vs/√Ldisp Vs x Lwl/vk 0.5381882 673490171.31 (Handout mata kuliah Tahanan dan propulsi kapal) (Edward V. Lewis. Principles of 3. Menghitung Volume displacement (▼) 8. Menghitung Koofisien Gesek (Cf) Cb x Lwl x B x T 0,075/(logRn-2)^2 2237.8261 0.0016085409 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald,5.5.14, Resista 4. Menghitung Berat displacement (▲) 9. Menghitung Koofisien Tahanan Sisa (Cr) ▼x ρ air laut Lwl/▼^0,333 2293.7718 5.534314158 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald, Resistance and 5. Menghitung Luas Permukaan Basah (S) 9.1 Interpolasi Diagram ρ air laut x Lpp((CbxB)+(1.7*T)) 10³Cr 1049.7947 m^2 4.00 1.60 ("Sv.Aa.Harvald,5.5.31, Resistance and 4.27 Propulsion of ship". Page.131) 1.41 4.50 1.25 ("Sv.Aa.Harvald,5.5.24, Resistance and Propulsion of ship". Pa 10. Menghitung Koreksi B/T B/T = 3.0159979019 10³Cr2 10³Cr2 Cr2
= 10³Cr1−0,16x(B/T−2,5) = 1.3284403357 = 0.0013284403
11. Menghitung Koreksi Cr terhadap LCB LCB (8,80-38,9 x Fn)/100 -0.0321526963 0.0321526963
Penentuan LCB normal dengan grafik LCB Standart yang ada d Resistance and Propulsion of ship". Page.128) %LCB standard = 0.55 LCB kapal = -0.0054967847 % koreksi terhadap harga Cr 10³Crstandard = -0.0017683983 10³Cr3 =-0.0069771351 Cr3 =-6.977135E-06
12. Menghitung Koreksi Cr karena adanya anggota badan k
Power and Propulsion of Ship
10³Cr4 Cr4
=10³Cr2 + (0.05 x 10³Cr2) =0.0013948624
Cr total
= 4.127326E-06
k k D 1 kW
0.7 - 0.9 0.8 2.7 1.34102
Pitch 1. Menghitung Efective Horse Power (EHP) EHP (PE) RT dinas x v 767.32828 kW 1029.004 HP
=
0.7
("Sv.Aa.Harvald, 6.2.1, Resistance and Propuls
2. Menghitung Wake fraction (w) Menghitung koofisien viskositas (Cv) Cv (1 + k)CF + CA 0.0034666 ("Edward V. Lewis. Principles of Naval Architec w
0.3095 x CB + [(10 x CV x CB ) - (0.32 x D/√B x T)] 0.0700753 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa
3. Menghitung Thurst Deduction fraction (t) t kxw 0.0560603 ("Edward V. Lewis.47, Principles of Naval Architecture Vol.2, pa
t ( untuk twin screw)
= 0.325 x CB - (0.1885 x D/√B x T) 0.1069348221 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa
4. Menghitung Speed of Advance (Va) Va (1-w) Vs 7.6542472 m/s 14.878795 knot
("Edward V. Lewis, Principles of Naval Architec
additional calculation of wake factor (wf) wf = 1.06 x - (0,4 x Cb) 0.29892 (for twin screw) ("Dave Gerr, Propeller Handbook, formula 6-4a, b, page 69.")
Determine of "n (rpm)" value
163.877958 V. Lewis. Principles of Naval Architecture ; Dave Gerr,Propeller Handbook.
kositas air laut
r udara (27^0 Celsius)
8.847E-07 0.0012
s kompartemen bagian depan
149.84 m^2 (metode autocad) 5.2110735 2659.2 6417.91 17.0665063 1572.21 6372.08 10.0182479 13. Menghitung Koofisien Tahanan Tambahan (Ca) Dari perhitungan awal diperoleh displasmen kapal jika melihat daftar pada "Sv.Aa.Harvald, Resistance v.Aa.Harvald,5.5.9, Resistance and Propulsion of ship". Page.116) adalah sebagai berikut : Interpolasi Ca ▲ = 1000 ton, ▲ = 2293.771779 ton, ward V. Lewis. Principles of Naval Architecture, page 57) ▲ = 10000 ton, ▲ = 100000 ton, ▲ = 1000000 ton,
v.Aa.Harvald,5.5.14, Resistance and Propulsion of ship". Page.117)
v.Aa.Harvald, Resistance and Propulsion of ship". Page.120-128) 10³Cr1 = Cr1 =
1.411 0.001411
and Propulsion of ship". Page.130)
14. Menghitung Koofisien Tahanan Udara dan Kemudi koofisien tahanan udara 10³CAA = 0.07 CAA = 0.00007 koofisien tahanan kemudi 10³CAS = 0.04 CAS = 0.00004
Figure 5.5.5 15. TAHANAN TOTAL KAPAL Koofisien tahanan total di air CT =CF + CR + CA + CAS CT = 0.002223918
Cr1−0,16x(B/T−2,5) Koofisien tahanan total di udara
CT
0-38,9 x Fn)/100 meter meter
=
0.00007
Tahanan Total (RT) RT air =CT x (0.5 x ρ x v^2 x S) RT air = 81.06369026 kN
(dibelakang Φ)
ik LCB Standart yang ada di ebook ("Sv.Aa.Harvald ,5.5.15 , Page.128) LCB standard = -1.7683983 (dibelakang Φ Kapal) ∆LCB 0.00520874
RT udara = CT udara x 0.5 x ρ udara x v^2 x luasan ko RT udara = 0.00042637 kN RT Total
= RT udara + RT udara 81.06411663 kN
Tahanan Total kondisi pelayaran dinas RT dinas = RT Total + (15%RT Total) 93.22373412 kN
na adanya anggota badan kapal
Cr2 + (0.05 x 10³Cr2)
(twin screw)
("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 160")
meter HP
1 HP
=
0.7457 kW
2.1, Resistance and Propulsion of ship". Page.133)
Principles of Naval Architecture Vol.2, page 162")
Naval Architecture Vol.2, page 163")
Naval Architecture Vol.2, page 159")
Naval Architecture Vol.2, page 163")
Principles of Naval Architecture Vol.2, fig.21, page 161")
ormula 6-4a, b, page 69.")
Interpolasi nilai w Cb w (twin screw) 0.5 -0.038 0.537 -0.02542 0.55 -0.021 ("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 158")
Tambahan (Ca) al diperoleh displasmen kapal sebesar = 2293.7718 ton da "Sv.Aa.Harvald, Resistance and Propulsion of ship". Page.292 (9.5.1)
Ca Ca Ca Ca Ca
= = = = =
0.0006 0.0005712 0.0004 0 -0.0006
Udara dan Kemudi
("Sv.Aa.Harvald ,5.5.26 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.27 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.29 , Resistance and Propulsion of ship". Page.131)
x ρ x v^2 x S)
0.5 x ρ udara x v^2 x luasan kompartemen bagian depan
isi pelayaran dinas (15%RT Total) ("Sv.Aa.Harvald ,5.5.28 , Resistance and Propulsion of ship". Page.131)
re Vol.2, page 158")
5. Menghitung Efisiensi propulsif 5.1 efisiensi relative rotative (ηrr) ηrr =0.9737+0.111 (Cp-0.0255LCB)+(-0.06325 P/D) 1.0466694 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa 5.2 efisiensi Open Water (ηo) ηo = 0.7
("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
5.3 efisiensi Hull (ηH) ηH (1 - t)/(1 - w) 0.9603629 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
5.4 Menghitung Koofisien propulsif (Pc) Pc ηrr x ηo x ηH 0.7036277 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
6. Menghitung Delivered Horse Power (DHP) DHP EHP/ηp 1404.4604 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
7. Menghitung Thrust Horse Power (THP) THP =EHP/ηH 1071.4741 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page 8. Menghitung Shaft Horse Power (SHP) SHP =DHP/ηs ηb 1878.5728 HP 1400.8518 kW
ηb =ηRR x ηo 0.73266855 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
9. Menghitung Power Main Engine
T(thrust) =
ηG
BHP Scr = SHP/ηG 1916.9111 HP BHP Mcr =BHP Scr /0.8 2255.1895 HP 1681.6948 kW BHP >SHP >DHP THP >EHP 2255.1895 1878.5728 1404.4604 1071.4741 1029.004
ηp
f Naval Architecture Vol.2, page 163")
=
0.7326685508
Interpolation of Pitch Ratio va Speed (knot 10 14 22.5 P/D
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 156")
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 120")
aval Architecture Vol.2, page 120")
ηs = aval Architecture Vol.2, page 120")
EHP/(1-t) x Vs 9483.9361 0.98 (assumption)
0.98
Interpolation of Pitch Ratio value Pitch Ratio (P/D) 0.85 0.898 1 0.85 + [(1-0.85)/(22.5-10)] x (14-10) 0.898 “Dave Gerr, Propeller Handbook, chart 5-4, Optimum Pitch Ratio, on page 55”
product Engine Brand Engine Model Engine Serial Engine arrangement Power Output N Manufacture date Governor Condition Description Air Cleaner Fly wheel housing size Cooling Alternator Starter Tier rating
Carterpillar 3508B 7SM00101 100-8316 2 x 500 HP 1600 rpm 1997 Electronic High Hour Runner
Dry type SAE0 Keel Cooled 24 volt Alternator 24 volt Electric Starter 1
Nama Kelas Nrp referensi
Jadug Priambodo D3 ME B 315030064 Sv.Aa.Harvald, Resistance and Propulsion of ship ; Edward V. Lewis. Principles of Nav David G.M. Watson, Practical Ship Design. Tugas Perhitungan Tahanan Kapal (metode Guldhammer and Harvald) I.Data Kapal Dimension Tipe kapal Lpp Lwl B H T Vs
A.H.T 70.2 meter 72.389 meter 11.5 meter 5.4 meter 3.813 meter 17 knot
=
Coofisien Cb Cbwl Cp Cwp ρ air laut g 8.74548 m/s
0.705 0.68 0.715 0.803 1.025 9.81 m2/s
viskositas air laut ρ air udara (27^0 Celsius)
Luas kompartemen bagian depa
1. Menghitung L displacement 6. Menghitung nilai Froude Number (Fn) 1/2*(Lpp+Lwl) Vs/√g x Lwl 71.2945 meter = 233.905847 feet 0.3281805652 ("Sv.Aa.Harvald,5.5.10, Resistance and Propulsion of ship". Page.117) ("Sv.Aa.Harvald,5.5.9, Resistan 2. Menghitung Speed Length Ratio 7. Menghitung Reynold Number (Rn) Vs/√Ldisp Vs x Lwl/vk 0.571825 715583307.02 (Handout mata kuliah Tahanan dan propulsi kapal) (Edward V. Lewis. Principles of 3. Menghitung Volume displacement (▼) 8. Menghitung Koofisien Gesek (Cf) Cb x Lwl x B x T 0,075/(logRn-2)^2 2237.8261 0.0015962077 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald,5.5.14, Resista 4. Menghitung Berat displacement (▲) 9. Menghitung Koofisien Tahanan Sisa (Cr) ▼x ρ air laut Lwl/▼^0,333 2293.7718 5.534314158 (Handout mata Teknik Bangunan Kapal) ("Sv.Aa.Harvald, Resistance and 5. Menghitung Luas Permukaan Basah (S) 9.1 Interpolasi Diagram ρ air laut x Lpp((CbxB)+(1.7*T)) 10³Cr 1049.7947 m^2 4.00 1.60 ("Sv.Aa.Harvald,5.5.31, Resistance and 4.27 Propulsion of ship". Page.131) 1.41 4.50 1.25 ("Sv.Aa.Harvald,5.5.24, Resistance and Propulsion of ship". Pa 10. Menghitung Koreksi B/T B/T = 3.0159979019 10³Cr2 10³Cr2 Cr2
= 10³Cr1−0,16x(B/T−2,5) = 1.3284403357 = 0.0013284403
11. Menghitung Koreksi Cr terhadap LCB LCB (8,80-38,9 x Fn)/100 -0.0396622399 0.0396622399
Penentuan LCB normal dengan grafik LCB Standart yang ada d Resistance and Propulsion of ship". Page.128) %LCB standard = 0.55 LCB kapal = -0.0054960338 % koreksi terhadap harga Cr 10³Crstandard = -0.0021814232 10³Cr3 =-0.0086067061 Cr3 =-8.606706E-06
12. Menghitung Koreksi Cr karena adanya anggota badan k
Power and Propulsion of Ship
10³Cr4 Cr4
=10³Cr2 + (0.05 x 10³Cr2) =0.0013948624
Cr total
= 4.125696E-06
k k D 1 kW
0.7 - 0.9 0.8 2.7 1.34102
Pitch 1. Menghitung Efective Horse Power (EHP) EHP (PE) RT dinas x v 915.27698 kW 1227.4064 HP
=
0.7
("Sv.Aa.Harvald, 6.2.1, Resistance and Propuls
2. Menghitung Wake fraction (w) Menghitung koofisien viskositas (Cv) Cv (1 + k)CF + CA 0.0034444 ("Edward V. Lewis. Principles of Naval Architec w
0.3095 x CB + [(10 x CV x CB ) - (0.32 x D/√B x T)] 0.0699561 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa
3. Menghitung Thurst Deduction fraction (t) t kxw 0.0559649 ("Edward V. Lewis.47, Principles of Naval Architecture Vol.2, pa
t ( untuk twin screw)
= 0.325 x CB - (0.1885 x D/√B x T) 0.1069348221 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa
4. Menghitung Speed of Advance (Va) Va (1-w) Vs 8.1336803 m/s 15.810746 knot
("Edward V. Lewis, Principles of Naval Architec
additional calculation of wake factor (wf) wf = 1.06 x - (0,4 x Cb) 0.29892 (for twin screw) ("Dave Gerr, Propeller Handbook, formula 6-4a, b, page 69.")
Determine of "n (rpm)" value
163.877958 V. Lewis. Principles of Naval Architecture ; Dave Gerr,Propeller Handbook.
kositas air laut
r udara (27^0 Celsius)
8.847E-07 0.0012
s kompartemen bagian depan
149.389 m^2 (metode autocad) 5.2110735 2659.2 6417.91 17.0665063 1572.21 6372.08 10.0182479 13. Menghitung Koofisien Tahanan Tambahan (Ca) Dari perhitungan awal diperoleh displasmen kapal jika melihat daftar pada "Sv.Aa.Harvald, Resistance v.Aa.Harvald,5.5.9, Resistance and Propulsion of ship". Page.116) adalah sebagai berikut : Interpolasi Ca ▲ = 1000 ton, ▲ = 2293.771779 ton, ward V. Lewis. Principles of Naval Architecture, page 57) ▲ = 10000 ton, ▲ = 100000 ton, ▲ = 1000000 ton,
v.Aa.Harvald,5.5.14, Resistance and Propulsion of ship". Page.117)
v.Aa.Harvald, Resistance and Propulsion of ship". Page.120-128) 10³Cr1 = Cr1 =
1.411 0.001411
and Propulsion of ship". Page.130)
14. Menghitung Koofisien Tahanan Udara dan Kemudi koofisien tahanan udara 10³CAA = 0.07 CAA = 0.00007 koofisien tahanan kemudi 10³CAS = 0.04 CAS = 0.00004
Figure 5.5.5 15. TAHANAN TOTAL KAPAL Koofisien tahanan total di air CT =CF + CR + CA + CAS CT =0.0022115829
Cr1−0,16x(B/T−2,5) Koofisien tahanan total di udara
CT
0-38,9 x Fn)/100 meter meter
=
0.00007
Tahanan Total (RT) RT air =CT x (0.5 x ρ x v^2 x S) RT air = 91.00573469 kN
(dibelakang Φ)
ik LCB Standart yang ada di ebook ("Sv.Aa.Harvald ,5.5.15 , Page.128) LCB standard = -2.1814232 (dibelakang Φ Kapal) ∆LCB 0.00642528
RT udara = CT udara x 0.5 x ρ udara x v^2 x luasan ko RT udara = 0.000479883 kN RT Total
= RT udara + RT udara 91.00621457 kN
Tahanan Total kondisi pelayaran dinas RT dinas = RT Total + (15%RT Total) 104.6571468 kN
na adanya anggota badan kapal
Cr2 + (0.05 x 10³Cr2)
(twin screw)
("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 160")
meter HP
1 HP
=
0.7457 kW
2.1, Resistance and Propulsion of ship". Page.133)
Principles of Naval Architecture Vol.2, page 162")
Naval Architecture Vol.2, page 163")
Naval Architecture Vol.2, page 159")
Naval Architecture Vol.2, page 163")
Principles of Naval Architecture Vol.2, fig.21, page 161")
ormula 6-4a, b, page 69.")
Interpolasi nilai w Cb w (twin screw) 0.5 -0.038 0.537 -0.02542 0.55 -0.021 ("Edward V. Lewis. Principles of Naval Architecture Vol.2, page 158")
Tambahan (Ca) al diperoleh displasmen kapal sebesar = 2293.7718 ton da "Sv.Aa.Harvald, Resistance and Propulsion of ship". Page.292 (9.5.1)
Ca Ca Ca Ca Ca
= = = = =
0.0006 0.0005712 0.0004 0 -0.0006
Udara dan Kemudi
("Sv.Aa.Harvald ,5.5.26 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.27 , Resistance and Propulsion of ship". Page.130)
("Sv.Aa.Harvald ,5.5.29 , Resistance and Propulsion of ship". Page.131)
x ρ x v^2 x S)
0.5 x ρ udara x v^2 x luasan kompartemen bagian depan
isi pelayaran dinas (15%RT Total) ("Sv.Aa.Harvald ,5.5.28 , Resistance and Propulsion of ship". Page.131)
re Vol.2, page 158")
5. Menghitung Efisiensi propulsif 5.1 efisiensi relative rotative (ηrr) ηrr =0.9737+0.111 (Cp-0.0255LCB)+(-0.06325 P/D) 1.0466481 ("Edward V. Lewis.52, Principles of Naval Architecture Vol.2, pa 5.2 efisiensi Open Water (ηo) ηo = 0.7
("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
5.3 efisiensi Hull (ηH) ηH (1 - t)/(1 - w) 0.9602398 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
5.4 Menghitung Koofisien propulsif (Pc) Pc ηrr x ηo x ηH 0.7035232 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
6. Menghitung Delivered Horse Power (DHP) DHP EHP/ηp 1675.2887 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
7. Menghitung Thrust Horse Power (THP) THP =EHP/ηH 1278.2291 HP ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page 8. Menghitung Shaft Horse Power (SHP) SHP =DHP/ηs ηb 2240.8718 HP 1671.0181 kW
ηb =ηRR x ηo 0.73265367 ("Edward V. Lewis, Principles of Naval Architecture Vol.2, page
9. Menghitung Power Main Engine
T(thrust) =
ηG
BHP Scr = SHP/ηG 2286.6039 HP BHP Mcr =BHP Scr /0.8 2690.1222 HP 2006.0241 kW BHP >SHP >DHP THP >EHP 2690.1222 2240.8718 1675.2887 1278.2291 1227.4064
ηp
f Naval Architecture Vol.2, page 163")
=
0.7326536718
Interpolation of Pitch Ratio va Speed (knot 10 14 22.5 P/D
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 156")
aval Architecture Vol.2, page 152")
aval Architecture Vol.2, page 120")
aval Architecture Vol.2, page 120")
ηs = aval Architecture Vol.2, page 120")
EHP/(1-t) x Vs 12019.569 0.98 (assumption)
0.98
Interpolation of Pitch Ratio value Pitch Ratio (P/D) 0.85 0.898 1 0.85 + [(1-0.85)/(22.5-10)] x (14-10) 0.898 “Dave Gerr, Propeller Handbook, chart 5-4, Optimum Pitch Ratio, on page 55”
product Engine Brand Engine Model Engine Serial Engine arrangement Power Output N Manufacture date Governor Condition Description Air Cleaner Fly wheel housing size Cooling Alternator Starter Tier rating
Carterpillar 3508B 7SM00101 100-8316 2 x 500 HP 1600 rpm 1997 Electronic High Hour Runner
Dry type SAE0 Keel Cooled 24 volt Alternator 24 volt Electric Starter 1
Calculation of Propeller Design and Cheking Cavitation "Dave Gerr, Propeller Handbook" ; "Edward V. Lewis, P Ship data T 19.521 feet 5.95 meter VS 11 knot = 5.6584 m/s Vadvance = 4.800242 m/s 9.331731 knot Z 4 blade Bon water line 12.6 meter 41.33858 feet Propeller Screws 1 (twin) Vadvance = 4.80024 m/s 9.331731 knot Vr^2 12380.44385 1.Determined of propeller diameter D = 0.6 to 0.7 (T) D
=
3.57 meter =
ηo t RT N e Ae/A0 Ae Ap
0.7 0.1 71.36753 kN
850 rpm = 0.705 0.35 20.48647 16.57892 m^2 6.Determine n (rps)
11.7126 feet
2.Determined of pitch ratio (P/D)
7.Determine of power fac
Interpolation of Pitch Ratio value Speed (knot) (P/D) 10 0.85 11 0.862 22.5 1
8.Determine of advance c
3.Determined of disk area(Ao) π/4 x D^2 Ao = Ao = 10.0047465 4.Determined of projected area to developed area (Ap/Ad) Ap/Ad = Ap/Ad = 5.Determined of trush (Thrust) Thrust = Thrust =
1025 – (0,1 x pitch ratio) – (0,0625 x pitch ratio^2) 0.89235975 Po RT/(1-t) 79.2972554 kN
PNA,vol.II, (37) on page 154
6.Determined of shaft speed (N) N value for tug with SLratio 0.585625 is
850 rpm
" ; "Edward V. Lewis, Principles of Naval Architecture.vol.II" Power Main Engine data BHP 967.4971 HP SHP 805.9251 HP DHP 773.6881 HP THP 510.4944 HP EHP 541.5816 HP
14.166666667 rps
Determine n (rps) D propeller
Thrust n (rpm)
19849.02540943 pounds 88292.83180675 N 88.2928318068 kN
850 n (rps)
14.1666667
Determine of power factor(Bp) Bp Bp
= SHP^0.5 x N/ V advance^2.5 = 90.7111638
Determine of advance coefficient (δ) δ = D (in feet) x N/Vadvance δ = 1066.86626
Tho C = Tho C =
0.0008393422
corection value of δ Bp value
=
σ
δ 9
0,7R
130
90.7111637659 610.653905 17.5 180
63.788 in 162.02152 mm
σ
0,7R
0.0180123378
