孤立波与不同淹没深度水平圆柱体的相互作用  

Solitary waves interaction with horizontal cylinder submerged in different depth

作　　者：刘长根[1] 陶建华[1] 

机构地区：[1]天津大学力学系,天津300072

出　　处：《水动力学研究与进展（A辑）》2006年第2期155-160,共6页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金(50509018)

摘　　要：用基于时变雷诺方程和方程为基础的数学模型模拟了孤立波与近海不同淹没深度水平圆柱的相互作用过程,其中自由表面的跟踪采用了分段线性近似的VOF方法。结果表明:当圆柱靠近水底时,尤其是在圆柱与底部海床有较小缝隙时,圆柱底部附近的涡旋较强;而圆柱靠近水面时,水面附近的涡旋较强,圆柱越靠近水面,圆柱背浪面一侧的水面附近产生的涡对越多。The interaction between solitary waves and a horizontal cylinder submerged in different depth is numerically simulated based on Reynolds Averaged Navier-Stokes equations with turbulence model, and piecewise linear volume tracking VOF method reconstructing the free surface. This paper presents the results. It was found that when the cylinder is closing to the seabed, especially with a small gap between the cylinder and the seabed, the vortices near the seabed at the leeward of the cylinder are more intensive. Whereas, when the cylinder is closing to the water surface, the vortices nearby the free surface at the leeward of the cylinder are more intensive, and the closer the cylinder to the surface, the more vortex pairs generated near the free surface at the leeward of the cylinder.

关 键 词：时变雷诺方程 自由表面 水波 圆柱体绕流 

分 类 号：TV139.2[水利工程—水力学及河流动力学]