摘要
基于雷诺时均Navier-Stokes方程(RANS)和连续方程,结合k-ω湍流模型,建立波浪与非淹没竖直圆柱相互作用的三维数值模型.在验证波浪对单个竖直圆柱波浪力和自由液面高程的基础上,着重研究圆柱间距S对两串联竖直圆柱波浪力与自由液面高程的影响.计算结果表明,圆柱间距S较大时(S=4 D),两串联圆柱中上游圆柱波浪力与单圆柱波浪力的演化曲线较为吻合;圆柱间距S较小(S=0.5 D)时,上游圆柱背风面自由液面高程明显抬升,使得上游圆柱波浪力较单圆柱大,同时上游圆柱侧方自由液面高程受反射波的影响较大.
A three-dimensional numerical model of the interaction between waves and vertical cylinders is established by solving the Navier-Stokes(RANS)equations and continuity equation with the turbulence model.On the basis of verifying the wave force on the single vertical cylinder and the elevation free surface waves,the influence of the spacing S between the two cylinders on the hydrodynamic forces and the free surface waves of the two vertical cylinders was studied.The calculation results show that when the spacing is large(S=4 D),the evolution curve of the wave force for a single cylinder with the time evolves has a better fit with the evolution curve of the upstream cylinder in the two cylinders;when the spacing decreases(S=0.5 D),the elevation of wave free surface near the rear of the cylinder increases gradually,causing the upstream cylindrical hydrodynamic forces greater than a single cylinder.Meanwhile the free surface waves on the side of the upstream cylinder is greatly affected by the reflected wave.
作者
吴昊
朱际休
廖斌
陈善群
WU Hao;ZHU Jixiu;LIAO Bin;CHEN Shanqun(College of Civil and Architectural Engineering,Anhui Polytechnic University,Wuhu 241000,China;Central Research Institute of Building and Construction MCC,Beijing 100088,China)
出处
《安徽工程大学学报》
CAS
2018年第5期88-94,共7页
Journal of Anhui Polytechnic University
基金
安徽工程大学研究生实践与创新基金资助项目(Y040117013)
