滑行艇在规则波中的数值模拟(英文)

Numerical Simulation of the Planing Vessel in Regular Waves

针对波浪中滑行艇水动力性能预报的不足,提出了一种基于六自由度运动模型的滑行艇水动力性能预报方法,实现其在波浪中自由运动的水动力性能预报。首先根据水波理论利用CFD技术完成了三维数值水池的造波和消波,然后以某型滑行艇为模型,将六自由度方程赋予滑行艇,实现了其在迎浪匀速航行时随波浪的自由运动,最后通过Fluent数值计算得到了其在波浪中自由运动时的阻力、升力、升沉位移、纵倾角以及兴波等流场参数。计算结果表明:利用该方法获得的某型滑行艇的流场参数较真实地反映了滑行艇在波浪中的姿态,为滑行艇耐波性实验提供了一定的理论依据。

For the lack of hydrodynamic performance prediction of planing vessels in waves, a plan- ing vessels＇ hydrodynamic performance prediction method based on six degrees of freedom motion model is proposed. The hydrodynamic performance prediction of planing vessels＇ free motion in wave is realized. The wave generating and absorbing of three-dimensional numerical wave tank are com- pleted based on the water wave theory and computational fluid dynamics （CFD） technology. The certain type of planing vessel is as a model. The six degrees of freedom equation of the planing vessel is applied, and the free movement of the planing vessel in regular head waves at uniform speed is achieved. Finally, by numerical calculation of Fluent, the planing vessel flow field parameters of drag, lift, heaving displacement, pitching angler and wave making performance with free movement in regular head waves are obtained. The calculation results show that the planing vessel＇s flow field pa- rameters obtained by this method could veritably reflect the attitude of planing vessel in waves. This method could provide important reference for the seakeeping experiment.