Computation of Turbulent Flow around Submarine Under Oblique Towing Condition
Date Issued
2005
Date
2005
Author(s)
Yang, Ming-Wu
DOI
zh-TW
Abstract
The turbulent flow field around the KVLCC2 tanker and the submarine are numerically simulated by solving the Reynolds Averaged Navier Stokes equations. Finite volume method is implemented in the RANS solver and the structured grids are used. For the KVLCC2 tanker in steady drift motion without the free surface, computations are carried out at angles of yaw from 0 to 12 degrees in model scale. The computational results are validated against the experimental data provided by the “CFD Workshop Tokyo 2005” in terms of various global and local quantities. All the results are in good agreement with experimental data.
For the submarine in steady drift motion, the hull form of submarine is imitation of German S209-1400 submarine. Computations for bare hull are carried out at angles of pitch from -20 to 20 degrees and angles of yaw from 0 through 20 degrees. Additionally, simulations for the submarine with appendages including sail and control fins are performed at angle of pitch from -15 to 20 degrees. The simulated results show that the appendages (sail, control fins) have great influence on flow field and resistance of the submarine. The simulated results also compare with experimental data. The comparison result shows that the present computational approach predicts the outstanding force coefficients and moment coefficients well.
Subjects
潛艦
斜航
計算流體力學
submarine
oblique towing
CFD
SDGs
Type
thesis
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