Salsabillah, Sabrina Nur (2024) Re-Desain Dan Evaluasi Sistem Propulsi Ferry Ro-Ro Dengan Metode CFD. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5019212003-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5019212003-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 July 2026. Download (2MB) | Request a copy |
Abstract
Seiringan dengan adanya kegagalan sistem propulsi yang ditemukan seperti yang terjadi pada kapal ferry ro-ro mengalami kegagalan dalam pengujian kecepatan kapal sehingga kapal tidak bisa mencapai kecepatan yang telah diinginkan yaitu 13 knot. Karena terdapat masalah kegagalan dalam pemenuhan kecepatan kapal. Propeller yang digunakan sebelum dilakukan pengurangan diameter dan blade area ratio yaitu B5-95 dengan kecepatan kapal 13,95 knot. Maka dilakukannya pengurangan diameter dan blade area ratio sebesar 500 mm menggunakan propeller B5-100 dengan metode trial dan error, masih mengalami kavitasi dan tidak terpenuhi clearancenya, dilakukan redesain propeller agar power dari main engine yang didistribusikan ke shaft lalu diteruskan ke propeller dapat mencapai kecepatan yang dibutuhkan kapal, rpm dan beban daya sesuai yang diiginkan serta terpenuhi clearance dan tidak mengalami kavitasi, Sehingga akan dilakukan Re- Desain dan evaluasi performa sistem propulsi. Model yang digunakan yaitu propeller B-Series, menggunakan metode CFD dengan simulasi pada self propulsion test. Didapatkan hasil optimal dari pemilihan propeller yaitu propeller jenis B5-105 dengan diameter 1.45 m memiliki nilai efisiensi sebesar 0.513 serta nilai KT sebesar 0.264 dan nilai KQ sebesar 0.041 pada saat open water test dalam kondisi service, tidak mengalami kavitasi karena nilai τc burril < nilai τc hitungan, dan propeller memiliki clearance yang memenuhi. Didapatkan engine propeller matching dari propeller B5-105 pada kecepatan 13 knot pada kondisi service dengan presentase engine power (%) telah mendapatkan service margin sebesar 19% sebesar 80.1% dan engine speed (%) sebesar 100% pada rpm 1650. Didapatkan performa system propulsi pada power kapal untuk EHP sebesar 647.48 kW, THP sebesar 799.717 kW, DHP sebesar 803.14 kW. System propulsi pada propeller B5-105 mendapatkan hasil BHP mesin pada kondisi service selisih sebesar 1.82 % dan efisiensi propeller lebih tinggi dibandingkan dengan propeller B5-100 dimana hanya mendapatkan efisiensi 0.418 dengan BHP 817.22 kW. Tercapainya beban load engine 80.1% dengan BHP 832.4 kW, dengan thrust sebesar 74.111 kN, nilai torque sebesar 13199 Nm, wake fraction sebesar 0.119, thrust deduction factor sebesar 0.133, dan efisiensi relatif rotatif sebesar 98.45%
===================================================================================================================================
In line with the failure of the propulsion system which was discovered, such as what happened on the ro-ro ferry, there was a failure in testing the ship's speed so that the ship could not reach the desired speed, namely 13 knots. Because there is a problem of failure to meet the ship's speed. The propeller used before reducing the diameter and blade area ratio was B5-95 with a ship speed of 13.95 knots. So the diameter and blade area ratio were reduced by 500 mm using a B5-100 propeller using the trial and error method, it still experienced cavitation and the clearance was not met, the propeller was redesigned so that the power from the main engine which was distributed to the shaft and then transmitted to the propeller could reach the desired speed. the required ship, rpm and power load are as desired and clearance is met and does not experience cavitation, so a re-design and evaluation of the performance of the propulsion system will be carried out. The model used is the B-Series propeller, using the CFD method with simulation in the self propulsion test. Optimal results were obtained from the propeller selection, namely the B5-105 propeller with a diameter of 1.45 m had an efficiency value of 0.513 and a KT value of 0.264 and a KQ value of 0.041 during the open water test in service conditions, did not experience cavitation because the τc burril value < τc value count, and the propeller has sufficient clearance. Obtained engine propeller matching from the B5-105 propeller at a speed of 13 knots in service conditions with a percentage of engine power (%) that has obtained a service margin of 19% of 80.1% and engine speed (%) of 100% at rpm 1650. Obtained propulsion system performance on ship power for EHP of 647.48 kW, THP of 799,717 kW, DHP of 803.14 kW. The propulsion system on the B5-105 propeller gets engine BHP results under service conditions of 1.82% and the propeller efficiency is higher compared to the B5-100 propeller which only gets an efficiency of 0.418 with a BHP of 817.22 kW. Achieved engine load load of 80.1% with BHP 832.4 kW, with thrust of 74,111 kN, torque value of 13199 Nm, wake fraction of 0.119, thrust deduction factor of 0.133, and relative rotative efficiency of 98.45%.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Blade Area Ratio, CFD, Efisiensi Propeller, Re-Desain, Self Propulsion Test; Thrust, Torsi, Blade Area Ratio, CFD, Efficiency Propeller, Re-Design, Self Propulsion Test, Thrust, Torsi |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM753 Propellers |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Sabrina Nur Salsabillah |
| Date Deposited: | 16 Feb 2024 07:50 |
| Last Modified: | 16 Feb 2024 07:50 |
| URI: | http://repository.its.ac.id/id/eprint/107253 |
Actions (login required)
 |
View Item |