Abstract: Load balancing is an important factor to improve the performance of large-scale parallel computing. In this paper, a static load balancing method of multi-layer grid with one-dimensional partition is proposed for the lattice Boltzmann method. This hybrid method includes the optimization of computing domain allocation based on time load and the optimization of communication hiding. Theoretical analysis and experimental results show that this method can improve the load balance problem of parallel calculation of lattice Boltzmann method, and can be applied to large-scale accurate calculation of aircraft aerodynamic noise flow field and sound field.

Key words: multi-grid;static load balancing, LBM, time load, communication hiding