航空计算技术
航空計算技術
항공계산기술
AERONAUTICAL COMPUTER TECHNIQUE
2015年
3期
21-24
,共4页
METIS%MPICH2%并行自适应方法%局部网格加密
METIS%MPICH2%併行自適應方法%跼部網格加密
METIS%MPICH2%병행자괄응방법%국부망격가밀
METIS%MPICH2%parallel adaptation algorithms%local mesh refinement
基于串行网格划分软件METIS与并行化消息传递编程接口（ MPICH2）对现有串行自适应程序进行简单的并行化改造，给出了一种三维可压缩无粘流数值模拟的并行自适应方法。首先利用单个进程调用METIS，串行划分网格；然后对所有进程并行计算以获得初始网格下的流场解；再次利用单个进程对整个流场运用自适应方法进行局部网格加密并调用METIS串行划分网格；最后全部进程在流场初始解的基础上继续并行计算，以获得自适应网格下的流场解。数值模拟算例验证了此方法的可靠性与高效性。
基于串行網格劃分軟件METIS與併行化消息傳遞編程接口（ MPICH2）對現有串行自適應程序進行簡單的併行化改造，給齣瞭一種三維可壓縮無粘流數值模擬的併行自適應方法。首先利用單箇進程調用METIS，串行劃分網格；然後對所有進程併行計算以穫得初始網格下的流場解；再次利用單箇進程對整箇流場運用自適應方法進行跼部網格加密併調用METIS串行劃分網格；最後全部進程在流場初始解的基礎上繼續併行計算，以穫得自適應網格下的流場解。數值模擬算例驗證瞭此方法的可靠性與高效性。
기우천행망격화분연건METIS여병행화소식전체편정접구（ MPICH2）대현유천행자괄응정서진행간단적병행화개조，급출료일충삼유가압축무점류수치모의적병행자괄응방법。수선이용단개진정조용METIS，천행화분망격；연후대소유진정병행계산이획득초시망격하적류장해；재차이용단개진정대정개류장운용자괄응방법진행국부망격가밀병조용METIS천행화분망격；최후전부진정재류장초시해적기출상계속병행계산，이획득자괄응망격하적류장해。수치모의산례험증료차방법적가고성여고효성。
Based on the serial mesh partitioning software METIS and Message Passing Interface (MPICH2),a simple parallel mesh adaptation algorithm for numerical simulation of compressible invis-cous flow is presented by paralleling the serial adaptive program .Firstly,a single process would call the METIS to serially partition the mesh ,and then processes are used to computer the flowfield .After this,the single process would apply the adaption algorithm to refine the local mesh and call the MEETIS again . Lastly,the new calculating is started on all processes on the flowfield based on the initial mesh .Numerical simulation results validate that the algorithm is reliable and effective .
