摘要
波流共存时会产生复杂的非线性相互作用,其联合作用比单纯的波浪或单纯的海流问题要复杂很多.基于不可压缩流体N-S方程建立数学模型,VOF法追踪自由液面,通过在动量方程中添加源项实现阻尼消波,利用商业软件平台FLUENT加载UDF进行二次开发,模拟了规则波与均匀流以及规则波与剪切流的波流数值水池.分析了均匀流与波浪的相互作用,得到了波流同向、波形变长、波幅降低、波流相向则影响相异等结论.探讨了剪切流对波浪的影响,并对计算结果进行了函数拟合.
Coexistence of wave and current generates a complex nonlinear interaction, which is much more com- plex than pure wave problems or pure current problems. Based on the incompressible fluid N-S equation, a math- ematical model was built, adopt VOF method to track the free surface, add source terms in the momentum equa- tion to make wave damp, and use software platform FLUENT and UDF programs to simulate the wave-uniform current as well as the wave-shear flow numeric tanks. The interaction of uniform current and wave is analyzed; when the current and the wave is in the same direction, the waveform becomes longer, the wave amplitude low- er, and its impacts will be opposite in a contrary condition. Besides, the paper explores the effects of shear flow on the wave, and gives the fitting functions to the result.
出处
《江苏科技大学学报（自然科学版）》
CAS
北大核心
2015年第1期10-15,共6页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
国家自然科学基金资助项目(51179077
51209107)
江苏高校优势学科建设工程资助项目
关键词
波流联合
数值水池
均匀流
剪切流
combined wave-current
numerical tank
uniform current
shear flow
