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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan
Agung Purwana
Marine Engineering Department, Politeknik Perkapalan Negeri Surabaya,
Earth & Planetary Sciences

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ANALISA KARAKTERISTIK BALING-BALING B SERIES DI AIR TERBUKA DENGAN CFD Purwana, Agung; Hidayati, Anita
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 11, No 1 (2014): Februari
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.674 KB) | DOI: 10.14710/kpl.v11i1.6339

Abstract

Analisa karakteristik baling-baling dibantu komputasi saat ini berkembang cukup pesat sehingga dapat diterapkan untuk menyingkap pengaruh viskositas terhadap efisiensi baling-baling. Penerapan Computational   Fluid Dynamic (CFD) dengan persamaan Reynolds Average Navier-Stokes dengan aliran fluida takmampat turbulen di sekitar daun baling-baling  yang bekerja bebas di air terbuka dapat diselidiki karakteristiknya. Dengan simulasi numerik dalam penelitian ini diharapkan karakteristik baling-baling berbasis propeller B series dan efisiensinya didapatkan. Dengan bantuan perangkat lunak yang disimulasikan dihasilkan beberapa parameter nilai simulasi seperti gaya dorong (N), torsi (Nm), Kt, 10Kq, J dan η baling-baling. Hasil simulasi ini kemudian divalidasi dengan diagram karakteristik baling-baling wageningen B.4.55 yang telah dipublikasi, Hasil simulasi yang telah dilakukan didapatkan nilai hasil simulasi menunjukkan besarnya nilai Kt , 10Kq ,  dan  η  pada J 0.7 memiliki nilai 0.179, 0.305 dan 0.654.
TOTAL RESISTANCE PREDICTION OF SELF PROPELLED COAL BARGE (SPCB) USING COMPUTATIONAL FLUID DYNAMIC Purwana, Agung; Husodo, Adi Wirawan
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 12, No 2 (2015): Juni
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.748 KB) | DOI: 10.14710/kpl.v12i2.8722

Abstract

In the present paper the computational fluid dynamic (CFD) technique is applied to predict the total resistance (Rt) of Self Propelled Coal Barge (SPCB). The simulation process was executed using ANSYS®software based on fluid flow (CFX) solver. The selected CFD method is volume of fluid (VOF). The solid modeling of SPCB is developed using Maxsurf®. Boundary conditions are set on each domain area covering bottom,free surface, inlet, outlet, shipand wall. The variation of computaitional grid (meshing grid) which is used in computation are SST (Shear Stress Transport)67,000, SST 73,000, SST 103,000, SST 117,000, SST 127,000, SST 147,000, SST 157,000, and SST 200,500. Total resistance (Rt) resulted from CFX computation is validated with total resistance (Rt) resulted from Holtrop. The larger of grid meshing size, the better of validation result. The CFD technique demonstrated good agreement with Holtrop formulae in predicting the total resistance (Rt) of SPCB.
Co-Authors Adi Wirawan Husodo Anita Hidayati