摘要
在Fluent软件平台下运用边界造波法,通过给定造波边界处流体的五阶速度和波面瞬时升高,实现了在数值波浪水槽中使用流体体积VOF法对Stokes五阶波浪的精确模拟,得到的波浪与传统理论值在时域和频域内均吻合很好.此外,为了更好地确定边界水质点输入参数,对现有的若干种五阶波理论解与流函数解在相同的波浪参数下进行对比,发现波浪参数在Ursell判据所定义的五阶波使用范围内时,理论解在波长、波速、波面瞬时升高等参数上区别甚微,但在接近破碎和椭圆余弦波的波浪条件下,波长和波速有较大的差别.
Using FLUENT,simulation of the fifth-order Stokes waves is achieved in the numerical wave flume by defining the inlet boundary conditions and using VOF solver.Comparison with theoretical wave profiles in both time-and frequency-domain shows that the simulated waves are accurate.In order to better determine the inlet water particle kinematics,the existing several models of fifth-order Stokes waves are compared with the stream function method being the most accurate method.These nonlinear solutions all agree well with each other when the wave conditions fall into the Stokes range specified by the Ursell criteria.However,they differ significantly from each other when waves approach the breaking limit and elliptical cosine wave conditions.
出处
《武汉理工大学学报（交通科学与工程版）》
2016年第2期238-244,250,共8页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目(51379035
41206075)
中国电建集团华东勘测设计研究院有限公司"波浪在单立柱三桩式风机基础结构上的爬升及对工作平台的砰击作用研究"项目资助
关键词
斯托克斯五阶波
数值波浪水槽
边界造波法
VOF方法
流函数
fifth-order stokes wave
numerical wave flume
wave-generation by defining inlet boundary conditions
VOF method
stream function
