| 采用并行计算和简化机理的HCCI发动机多维模拟 | |
| 王志 ; 帅石金 ; 王建昕 ; 曹连雨 ; 吴宗友 ; WANG Zhi ; SHUAI Shi-jin ; WANG Jian-xin ; CAO Lianyu ; WU Zong-you | |
| 2010-05-13 ; 2010-05-13 | |
| 关键词 | HCCI 燃烧 并行计算 简化机理 HCCI Combustion Parallel computation Reduced mechanisms TK401 |
| 其他题名 | Multi-Dimensional Simulation of HCCI Engine Using Parallel Computation and Reduced Mechanisms |
| 中文摘要 | HCCI燃烧过程多维数值模拟十分耗时。采用并行计算和简化机理对HCCI燃烧过程多维CFD模拟计算进行了加速对比。研究基于16-CPU计算机集群系统,采用消息传递的并行算法(M essage-Passing Interface,MPI)方式计算。结果表明,内燃机HCCI燃烧多维燃烧模拟,采用8个CPU能获得最大收益:纯流动计算加速5倍,耦合化学反应流动计算加速4倍,简化反应机理又可加速9倍。通过优化选择并行计算CPU数量和反应机理,使得HCCI发动机单个循环模拟时间由一个月缩短到一天,大大提高了汽车发动机燃烧模拟计算的效率。而且采用三维CFD耦合化学反应的模拟计算,可以解析HCCI发动机着火燃烧过程,提供详细的流动、燃烧和排放物生成的瞬态信息。; This study improved the computational efficiency significantly by using the parallel computation and reduced mechanisms.The simulations were made under a cluster of 16-CPU,parallelized using message-passing interface(MPI) mode.The cases with detailed and reduced reaction mechanisms were calculated using 1,2,4,8,16 CPUs respectively and the corresponding computational time and time-reduced were discussed.Using MPI 8-CPU with the reduced mechanism can obtain the best results for CFD/Chemistry calculation of a typical HCCI engine.For the whole HCCI engine simulation,the calculation time reduced from 1 month to 1 day from using single CPU with detailed mechanism to MPI 8-CPU with reduced mechanism.Moreover,CFD/Chemistry calculation can provide the detailed insight to ignition,combustion and pollution formation processes of HCCI engines. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/31398]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 王志,帅石金,王建昕,等. 采用并行计算和简化机理的HCCI发动机多维模拟[J],2010, 2010. |
| APA | 王志.,帅石金.,王建昕.,曹连雨.,吴宗友.,...&WU Zong-you.(2010).采用并行计算和简化机理的HCCI发动机多维模拟.. |
| MLA | 王志,et al."采用并行计算和简化机理的HCCI发动机多维模拟".(2010). |
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