為了模擬自主式無人水下載具 (AUV) 在拖航水槽中的水平平面運動機構 (HPMM) 測試，本研究嘗試開發一套基於雷諾平均納維-斯托克斯 (RANS) 求解器的動態網格策略以重現 HPMM 的各種運動。對於重現的每種運動模式，姿態上分為偏航模式、俯仰模式和滾動模式。在每種姿態中，有直線斜航運動、縱移運動、橫移運動、橫搖運動、橫搖運動結合一個漂流角運動。模擬結果通過在國立成功大學的拖航水槽進行的一系列 HPMM 測試得到了驗證。數值模擬中採用的動態網格策略，包括平滑法、動態分層法和基於尺寸函數的局部網格重生法來處理AUV運動導致的網格更新。由於數值結果與實驗數據相當吻合，以此證明了提出的動態網格策略適用於HPMM試驗的模擬。

In order to simulate horizontal planar motion mechanism (HPMM) tests of an autonomous underwater vehicle (AUV) in a towing tank, the research presented here is an attempt to develop a dynamic mesh strategy based on the Reynolds Average Navier-Stokes (RANS) solver to reproduce the various motions of the HPMM. For each mode of reproduction, the installation mode is divided into the yaw mode, pitch mode, and roll mode. In each installation mode, there are driven straight-line motions with constant drift angles, pure surging motion, pure yawing motion, and pure yawing motion with a constant drift angle. The simulation results were verified by conducting a series of HPMM tests in the towing tank at National Cheng Kung University. The dynamic mesh strategy, which consists of the boundary layer smoothing method, the dynamic layering method, and the size function-based local remeshing method, was employed to process the mesh update as a result of the AUV motion in the numerical simulation. Since the numerical results are quite consistent with the experimental data, it was proven that the proposed dynamic mesh strategy is suitable for the simulation of the HPMM test in a towing tank.

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