... Colebrook equation 科尔布鲁克关系式 collar vortex 涡环 collisionless shock 无碰撞激波 ...
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考虑到非线性的自由液面边界条件，用下潜涡环栅格法求解水翼绕流问题。
The nonlinear free surface boundary condition is considered and the hydrodynamics forces of the hydrofoil near the free surface are calculated by the submerged vortex lattice method.
结果表明：由于粘性的存在，使得涡环与自由表面的相互作用与无粘情形相比有许多不同。
The results show that the interaction between a viscous vortex ring and a free surface is different from the inviscid one.
将艇体看作回转体，在轴线上分布离散的点源模拟艇体，用升力面理论的涡环栅格法模拟附体；
The hull is defined as a revolution body. The hull volume effects are represented by a series of point source and sinks distributed on the hull axis.
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