关键词: 动态负载平衡, 并行模拟计算, 自适应非结构网格

Abstract: Combustion numerical simulations usually adopt unstructured meshes to simulate calculated area. In parallel simulation, the adaptive mode of unstructured meshes makes loads on different processors change fiercely and frequently which leads low parallel efficiency. In order to improve the efficiency of parallel computing, an effective way is the use of dynamic load balancing technology. An adaptive dynamic load balancing strategy related to the combustion chemical reaction state is proposed. The method uses different strategies to predict the load of the process at different stages of combustion chemical reaction. And the computing tasks are equally distributed between processors to achieve load balancing. The experimental analysis shows that this method can effectively reduce the load imbalance rate, and the overall simulation time is reduced by 10%.

Key words: dynamic load balancing, parallel simulation, adaptive unstructured mesh