基于SAMR网格的流体力学不稳定性并行计算

摘要

Computation based on the SAMR mesh gets the same simulation results as that on the global refinement mesh,but the former only needs less cells and computation time. A parallel SAMR program for the simulation of hydrodynamic instability in inertial confinement fusion is developed on JASMIN. And an implosion experiment is simulated on hundreds of processors. Both simulation results and performance analysis demonstrate the correctness and high efficiency of the code.Q%相对于一致加密网格,SAMR网格可以在保持相同数值模拟精度的前提下,大幅度减少网格数目,缩短计算时间.针对惯性约束聚变中的流体力学不稳定性数值模拟,基于JASMIN框架研制了二维多介质流体力学并行SAMR应用程序.在数百个CPU核上模拟了压缩内爆模型,数值模拟结果和并行性能分析显示了应用程序的正确性和并行实现的高效率.