Lifting of a large object from a rigid porous seabed
This study investigates the flow field induced by the tilting lift of a large object from a rigid porous seabed and the induced force acting on the object using an analytical approach. In the corners between the object and the seabed, we assume the flow is a corner flow with a low Reynolds number, and the porous media flow in the seabed obeys Brinkman equations. The complete boundary conditions for viscous flow, including the continuity of velocities and stresses, are utilized at the seabed-water interface. The Helmholtz decomposition theorem, which decomposes the flow field into irrotational and rotational parts, and a perturbation expansion are employed to solve the boundary-value problem. Leading-order analytical solutions for the flow in the water and in the porous seabed are presented, indicating that the flow inside the corners is not a parallel flow, and the porous media flow inside the seabed is a Stokes boundary layer flow that does not obey Darcys law.
Lifting of object breakout phenomenon porous media flow boundary layer low-Reynolds-number flow
Hsueh-mei Huang Meng-yu Lin Liang-hsiung Huang
1Department of Civil Engineering,National Taiwan University,Taipei,China
国际会议
9th International Conference on Hydrodynamics(第九届国际水动力学会议 ICHD2010)
上海
英文
106-113
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）