Parallel chemistry acceleration algorithm in the application of oblique detonation simulations

摘要：

　　A parallel ISAT-based algorithm with the storage/deletion operation is selected and applied in the numerical simulation of a two-dimensionally gaseous oblique detonation to reduce the computational cost of chemical reactions.To analyze the effect of number of sub-zones on the performance of the selected chemical algorithm in parallel computation, two cases with 15 and 30 of sub-zones are respectively employed to perform the simulations.Results show that the parallel chemistry acceleration algorithm exhibits the satisfactory performances on both the computational accuracy and efficiency for both cases in present study.The speedup ratios of 3.71 and 2.91 are obtained for 15 sub zones case and 30 sub-zones case respectively in the end of computations.Furthermore, it is found that the decrease of sub-zones number can reduce the differences of balance and synchronization of table operations among sub-zones/tables, which interprets the better computational efficiency for 15 sub-zones case in the oblique detonation simulations.

关键词： In situ adaptive tabulation (ISAT) Parallel chemistry acceleration algorithm Oblique detonation number of sub-zones Balance and synchronization

作者: Jin-tao WU Gang DONG Ming-yuan HU Yao-hui CHEN Bao-ming LI

作者单位: Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 688-691

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）