Is standard symmetric formulation always better for smoothed particle hydrodynamics?
文献类型：期刊论文
| 作者 | Ma, Jingsen1,2; Ge, Wei1 |
| 刊名 | COMPUTERS & MATHEMATICS WITH APPLICATIONS
 |
| 出版日期 | 2008-04-01 |
| 卷号 | 55期号:7页码:1503-1513 |
| 关键词 | smoothed particle hydrodynamics incompressible flows pressure gradient symmetry sound speed particle method smoothing length |
| ISSN号 | 0898-1221 |
| 其他题名 | Comput. Math. Appl. |
| 中文摘要 | We try to demonstrate in this article that, for quasi-incompressible flows, the standard symmetric formulation of pressure gradient in smoothed particle hydrodynamics (SPH) is not necessarily superior to asymmetric ones. Comparative simulations on plane Poiseuille flows at very low Reynolds numbers show that the results using symmetric formulation are more dependent on the Computational sound speed chosen, and display a larger error at the same sound speed. Our asymmetric formulation is also less sensitive to both the decrease in the smoothing length and the increase in the Sound speed in simulating flows past a periodic lattice of cylinders. A preliminary explanation of the difference between symmetric and asymmetric formulations and a possible way to develop a better symmetric formulation based on Our formulation are also discussed. (c) 2007 Elsevier Ltd. All rights reserved. |
| 英文摘要 | We try to demonstrate in this article that, for quasi-incompressible flows, the standard symmetric formulation of pressure gradient in smoothed particle hydrodynamics (SPH) is not necessarily superior to asymmetric ones. Comparative simulations on plane Poiseuille flows at very low Reynolds numbers show that the results using symmetric formulation are more dependent on the Computational sound speed chosen, and display a larger error at the same sound speed. Our asymmetric formulation is also less sensitive to both the decrease in the smoothing length and the increase in the Sound speed in simulating flows past a periodic lattice of cylinders. A preliminary explanation of the difference between symmetric and asymmetric formulations and a possible way to develop a better symmetric formulation based on Our formulation are also discussed. (c) 2007 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Mathematics, Applied |
| 研究领域[WOS] | Mathematics |
| 关键词[WOS] | INCOMPRESSIBLE SPH METHOD ; FREE-SURFACE ; FLOWS ; SIMULATION |
| 收录类别 | SCI ; ISTP |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000255541600015 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2820]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Multiphase React Lab, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Jingsen,Ge, Wei. Is standard symmetric formulation always better for smoothed particle hydrodynamics?[J]. COMPUTERS & MATHEMATICS WITH APPLICATIONS,2008,55(7):1503-1513. |
| APA | Ma, Jingsen,&Ge, Wei.(2008).Is standard symmetric formulation always better for smoothed particle hydrodynamics?.COMPUTERS & MATHEMATICS WITH APPLICATIONS,55(7),1503-1513. |
| MLA | Ma, Jingsen,et al."Is standard symmetric formulation always better for smoothed particle hydrodynamics?".COMPUTERS & MATHEMATICS WITH APPLICATIONS 55.7(2008):1503-1513. |
入库方式： OAI收割
来源：过程工程研究所
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