【摘要】 以CFD商用软件Fluent 15.0为基础,天河二号超级计算机为平台,ZnO-MOCVD腔体为数值模型,对网格无关性及超算中心的并行计算能力进行研究。通过计算7种不同网格数量的ZnO-MOCVD模型的沉积率,确定网格数量为408万时沉积率结果达到网格无关性。根据工程需要选取其中两种模型,设置并分析多种并行组合,得出网格数量为17万和408万的MOCVD腔体模型的最佳处理器核数分别为16和128,最大加速比分别可以达到9和45,验证了该软件在天河二号上并行处理的实用性,结果可为后续大规模计算提供参考。更多还原

【Abstract】 Based on the Fluent 15.0,the platform of Tianhe II supercomputer,and the numerical model of ZnO-MOCVD chamber,the grid independence and the parallel computing capabilities of the supercomputing center were studied.By calculating the deposition rate of ZnO-MOCVD model with seven different grid numbers,the number of grids whose deposition rate resulting in grid independence was determined to be 4 million 80 thousand.According to the needs of the project,two models were selected,and a number of parallel combinations was set up and analyzed,and the optimal processor cores of the MOCVD chamber model with 170 thousand mesh number and 4 million 80 thousand mesh number were obtained,respectively,16 and 128,and the maximum speedup reached 9 and 45 respectively.By comparing the computational efficiency,the optimal parallel computing combination was obtained,and the simulation cycle was shortened greatly,the practicality of Fluent parallel processing on Tianhe II was verified,the results provided a reference for following large-scale computation.更多还原