岸壁对两船间水动力相互作用的影响

Effects of bank on the ship-ship interaction

针对船船间的水动力干扰问题,本文通过求解RANS(Reynolds-Averaged Navier-Stokes)方程模拟了航行船经过停泊船时的船船间水动力相互作用,计算中采用Realizable k-ε湍流模型封闭RANS方程,采用重叠网格技术实现船舶运动时的网格更新。在对数值计算方法的有效性进行验证后,探讨了岸壁形状、船岸间距等对航行船与停泊船的水动力干扰的影响。研究结果表明:岸壁形状对停泊船受到的力和力矩影响较小,岸壁与停泊船之间的水域体积大小对停泊船所受的力和力矩有一定影响,该体积越小,停泊船受到的纵荡力越大、横荡力与艏摇力矩越小。

Aiming at the ship-ship hydrodynamic effect,the hydrodynamic interaction between a passing ship and a berthed ship was simulated based on RANS equations.In the simulation,the Realizable k-εturbu⁃lence model was used,and the overset mesh technique was adopted to simulate the relative movement be⁃tween the two vessels.Firstly,the numerical method was validated by comparing calculated results with ex⁃perimental data.Then,the effects of the type and shape of the quay wall on the hydrodynamic interaction be⁃tween the passing ship and the berthed ship were discussed.The research results show that the shape of quay wall has little influence on the force and moment of the berthed ship.The volume of the water area between the quay wall and the berthed ship has a different influence on the force and moment of the berthed ship.When the volume of this water area decreases,the surge force increases and the sway force and yaw moment decrease instead.