本論文使用平行舯體(Parallel Middle Body, PMB)型水下載具(Underwater Vehicle, UV)中著名的Myring型水下載具和ANSYS Fluent軟體進行計算流體力學(Computational Fluid Dynamics, CFD)模擬。透過數值研究來提高水下載具在10節航速下的最佳船體性能，例如:低阻力及高體積效率…等。數值方法採用有限體積法(Finite Volume Method, FVM)搭配Semi-Implicit Method for Pressure-Linked Equations-Consistent(SIMPLEC)求解器，並使用SST k-ω為紊流模型，建立水下載具阻力試驗模擬的方法。透過網格獨立性測試及表面網格加密分析，確立網格數量和水下載具阻力模擬的準確性。最後透過改變Myring型水下載具方程式中的參數獲得不同的船體。針對這些船體進行阻力試驗模擬，並選出一艘具有最佳船體性能的水下載具。以滿足獵雷用水下載具所需的高速、低阻力且足夠的炸藥配置空間等需求。

This thesis utilizes the well-known Myring-type underwater vehicle (UV) in the parallel middle body (PMB) type and the ANSYS Fluent software for computational fluid dynamics (CFD) simulations. Through numerical research to improve the performance of underwater vehicles at a speed of 10 knots, such as low resistance and high volumetric efficiency, etc. The numerical method employed is the finite volume method (FVM) in combination with the Semi-Implicit Method for Pressure-Linked Equations-Consistent (SIMPLEC) solver. By using the FVM, the SIMPLEC solver, and the SST k-ω turbulence model, an accurate method is established to simulate the resistance tests of the underwater vehicle. Mesh independence analysis and surface mesh refinement analysis determine the appropriate mesh resolution and ensure accuracy in resistance calculations. Finally, by varying the parameters in the equation of the Myring-type underwater vehicle, different hull shapes are obtained. Resistance test simulations are performed for these hull shapes, and the underwater vehicle hull with the best performance is selected. This selection intends to meet the requirements of high-speed, low resistance, and sufficient explosive configuration space for a mine-hunting underwater vehicle.

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