| N-S方程中非稳态项对SIMPLER程序收敛性的影响 |
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| 引用本文： | 刘洋,史月涛,刘杰,高明,赵元宾,孙奉仲.N-S方程中非稳态项对SIMPLER程序收敛性的影响[J].山东大学学报(工学版),2009,39(6):139-142. |
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| 作者姓名： | 刘洋 史月涛 刘杰 高明 赵元宾 孙奉仲 |
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| 作者单位： | 刘洋:山东诚信工程建设监理有限公司, 山东 济南 250100；史月涛 高明 赵元宾 孙奉仲: 山东大学能源与动力工程学院, 山东 济南 250061;刘杰: 山东电力工程咨询院有限公司, 山东 济南 250100 |
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| 摘 要： | 当对流项采用高阶格式或高阶组合格式离散时,对于某些问题,如二维顶盖驱动流动和后台阶流动在雷诺数较高时,程序很难收敛.实施SIMPLER算法,考虑非稳态项对程序收敛性的影响,对二维顶盖驱动流动和后台阶流动的计算表明,在高雷诺数时,稳态计算程序不能收敛时,通过引入非稳态项可以大大促进程序的收敛.
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| 关 键 词： | N-S方程 非稳态项 收敛性 |
| 收稿时间： | 2008-11-18 |
Influence of unsteady term in the N-S equation on convergence of the SIMPLER algorithm |
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| LIU Yang,SHI Yue-tao,LIU Jie,GAO Ming,ZHAO Yuan-bin,SUN Feng-zhong.Influence of unsteady term in the N-S equation on convergence of the SIMPLER algorithm[J].Journal of Shandong University of Technology,2009,39(6):139-142. |
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| Authors: | LIU Yang SHI Yue-tao LIU Jie GAO Ming ZHAO Yuan-bin SUN Feng-zhong |
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| Abstract: | For some cases, such as 2-D lid-driven cavity flow and backward-facing step flow, it is difficult to converge, when some high-order schemes are adopted. The influences of the unsteady term on convergence of the SIMPLER algorithm were discussed. In conclusion, the algorithm with a steady term could not converge with the high Re number, and the convergence could be greatly improved by adopting the unsteady term. |
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| Keywords: | the N-S equation unsteady term convergence |
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