粘性流体数值波浪水池研究

摘要

Numerical wave basin is a frontier subject in the direction of fluid mechanics in recent years.In this paper, the N-S equation was resolved by the VOF model to capture the free surface, combined with the RNG k?? turbulence model using the Fluent software. At present, the typical model of the physics simulation of the wave-making method and the direct wave-making method is analyzed, and aslo the three-dimensional numerical wave-making was analyzed as an intro-duction .In the simulation of the physics wave-making, simulate the rocker-flap wave maker in the real tank. The simulation, using the moving grid and damping wave elimination technique to make the regular wave. In the direct wave making meth-od, using the given inlet boundary velocity or pressure and combined with the damping wave elimination technique, the nu-merical simulation rules, the results of the numerical waveform and the theoretical waveform of the direct wave making-method are better than the results of the physics simulating wave method.%数值波浪水池是近年来船舶流体力学方向的前沿课题,本文采用Fluent软件,利用VOF模型捕捉自由液面,结合RNGk?ε湍流模型,求解N-S方程,对目前数值造波较为典型的仿物理造波法和直接造波法在二维模式下进行分析,并对三维模式的数值造波作了初步分析.在仿物理造波法中模拟真实水池中推板式造波机,利用动网格和阻尼消波技术,生成规则波的情况.在直接造波法中,利用给定入口边界速度或压力并结合阻尼消波技术,在数值水池模拟规则波,得到直接造波法的数值波形与理论波形的吻合度要优于仿物理造波法的结果.为在数值波浪水池中对船舶水动力性能预报奠定基础.