Research of develop the unstructured moving mesh technique to predict the hydrodynamic performance of such underwater military vehicle

• Main Authors: Ching Yu - Lei, 雷清宇
• Other Authors: Liu Tsung-Lung
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/41728793791786696687

碩士 === 國防大學中正理工學院 === 造船工程研究所 === 93 === The earth is covered by almost 70% of the oceans. Since the oceans undergoes the effects from the earth motion, temperature cycle etc., they are always moving, and the environment below the ocean surface is complicated all the time. As the ancients want to put wings to fly in the blue sky, the unknown deeply sea world has been the mystery kingdom that human being desire to explore. Therefore, among the research relevant to the ocean engineering, the submarine’s motion flow is always a focus in this field. In order to predict the behavior of the submarine motion correctly, the objective of this research is to develop the unstructured moving mesh technique to predict the hydrodynamic performance of such underwater military vehicle. A well-valid turbulence model with wall function treatment for the vicinity of body surface is employed to fulfill the submarine flow computations. The fluid meshes are unstructured triangular-typed meshes with moving mesh capability based on the mesh regeneration and interpolation techniques. The present numerical method, which is proven to be very practical, can be extended to account for the moving submerged-body flows to simulate the more complicated motion of an underwater vehicle in the ocean. In addition, the method applied in this research could also be a useful tool for the Navy to do the marine weapon-purchasing evaluation, vessel design, module of vessel testing, and tactics estimation.