LBM modeling of wave-current interaction with a square cylinder based on Shallow Water Equations

4th International Conference on Water Resource and Environment

地球科学;生态环境科学

Li, J.J.^1 ; Wei, T.^1 ; Qiu, L.C.^1 ; Han, Y.^1

College of Water Resources and Civil Engineering, China Agricultural University, Beijing

100083, China^1

关键词: Complex-coupling;    Interaction of waves;    Lattice Boltzmann method;    Lattice boltzmann methods (LBM);    Operating condition;    Shallow water equations;    Simulation process;    Wave current interaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/191/1/012081/pdf
DOI  :  10.1088/1755-1315/191/1/012081

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The interaction between a square cylinder with wave-current is numerically simulated using the Lattice Boltzmann Method (LBM) based on Shallow Water Equations. The velocity and water level around the pile are presented and discussed. The feasibility of the method is verified by comparing the free surface with the literature, and the use range of the Lattice Boltzmann Method is broadened. The simulation process mainly includes three different scenarios, namely wave, current and wave-current. By simulating the three operating conditions, it is analyzed that the interaction of wave-current is not a linear wave and current accumulation, but a complex coupling behaviour. The paper shows that the wave-current interaction with a square cylinder leads to complex phenomena. As a consequence, the wave surface elevation cannot be obtained by a linear overlapping of wave and current profiles.