三维无反射数值波浪水池及波浪与结构物相互作用的模拟

doi:10.16183/j.cnki.jsjtu.2018.03.001

摘要/Abstract

摘要： 基于不可压缩黏性流体的N-S方程，采用质量源造波法建立了三维无反射数值波浪水池，并成功地模拟了波浪与浮体的相互作用问题.该数值水池中间为质量源造波区和工作区，两端为消波区，以避免由边界引起的二次波浪反射.数值模拟规则行进波传播，波浪与贯底直立墙壁、矩形浮体、多浮体相互作用，并与边界法数值水池造波以及相关理论、试验结果进行了比较.研究表明，质量源法数值水池较好地模拟了波浪传播及在结构物前形成的驻波，克服了边界造波法无法消除二次反射波的困难，体现了无反射数值波浪水池的效果.采用数值模拟研究了波浪与并排旁靠的Wigley船和矩形驳船在不同频率波浪作用下的水动力性能，各频率上浮体所受的波浪力计算结果和试验值吻合良好，在共振频率附近比势流结果更为准确

关键词: 无反射数值波浪水池, 质量源法, 波浪, 浮体

Abstract: Based on the Navier-Stokes equations, a 3-D viscous non-reflection numerical wave tank is established by using mass source method, and the interactions of waves and floating structures are investigated in the tank. In the tank the mass source region and working zone are surrounded by two sponge layer zones at both ends of the tank in order to avoid the reflected waves. Regular traveling waves and the interactions of wave and bottom-mounted wall, floating structures are simulated. The results show that the waves gene-rated by mass source method and their propagation agree well with the theoretical results. In the wave tank standing waves form before the structures, which reveals the tank’s non-reflection function. The interaction of waves and two floating bodies of Wigley and rectangular box side by side are simulated and analyzed. The computed wave forces at various frequencies are in good agreement with the experimental results, especially near the resonant frequency that they are much closer to experimental ones comparing with results over-predicted by the potential flow method.

Key words: non-reflection wave tank, mass source method, waves, floating structures

中图分类号:

U 661.32

杨云涛，朱仁传，蒋银，缪国平. 三维无反射数值波浪水池及波浪与结构物相互作用的模拟[J]. 上海交通大学学报（自然版）, 2018, 52(3): 253-260.

YANG Yuntao,ZHU Renchuan,JIANG Yin,MIAO Guoping. Simulation of 3-D Viscous Non-Reflection Numerical Wave Tank and the Interactions of Waves and Structures[J]. Journal of Shanghai Jiaotong University, 2018, 52(3): 253-260.

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