Development of two-dimensional numerical wave tank based on lattice Boltzmann method
Development of two-dimensional numerical wave tank based on lattice Boltzmann method
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DOI：
10.1007/s42241-019-0039-8
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发表时间：
2019-04
影响因子：
2.5
通讯作者：
Guangwei Liu;Qinghe Zhang;Jinfeng Zhang
中科院分区：
文献类型：
--
作者：
Guangwei Liu;Qinghe Zhang;Jinfeng Zhang
采用格子Boltzmann方法（LBM）和多重弛豫时间（MRT）碰撞模型，结合代数流体体积（VOF）方法建立了二维数值波浪水槽（NWT）。基于动量源函数的外力用于产生波，并且多孔介质区域用于吸收波。对行波和驻波的数值模拟表明，行波管能产生与解析解一致的稳定波列，并能消除二次反射波。数值模拟了波浪在潜堤上的变形和波浪在海堤上的爬高。数值计算结果与实测数据吻合较好。
A 2-D numerical wave tank (NWT) is developed using the lattice Boltzmann method (LBM) and a multi-relaxation-time (MRT) collision model coupled with an algebraic volume of fluid (VOF) scheme for free surface tracking. An external force based on the momentum source function is used to generate the waves, and a zone of porous media is used to absorb the waves. Numerical simulations of the progressive and standing waves show that the NWT can generate stable wave trains in agreement with the analytical solutions and eliminate the re-reflection waves. The NWT is used to simulate two problems encountered in practice, namely: the wave transformation over a submerged breakwater and the wave runup on a sea dike. The numerical predictions are in good agreement with the measured data.