Velocity Field in Ship Waves on the Viscous Fluid
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摘要: 从Navier-Stokes方程出发,导得了水上运动物体船行波的波高和水平速度二重积分的表达式.其次采用Lighthill两步法将上述的积分表达式化为代数表达式.与海水作为理想流体所得的结果相比,消除或减弱了原有的奇性,提高了船行波的数字资料的精度.Abstract: From the Navier-Stokers equations,the integral expressions of the free-surface elevation and the velocity field in ship waves of a moving waterborne body are obtained. Next,Lighthill's two- stage scheme is employed to change the above-mentioned integral expressions to algebraic expressions. Compared with the results obtained when the seawater is idealized to an inviscid fluid,the singularities are dispelled or weakened,and the accuracy of the digit information of ship waves is improved.
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Key words:
- viscous fluid /
- moving body on the water /
- ship wave
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