| 引用本文: | 刘 伟,牟 斌.非定常超音速流动数值计算方法比较.[J].国防科技大学学报,2001,23(1):1-4.[点击复制] |
| LIU Wei,MOU Bin.A Comparison of Numerical Computational Methods for Unsteady Supersonic Flow[J].Journal of National University of Defense Technology,2001,23(1):1-4[点击复制] |
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| 非定常超音速流动数值计算方法比较 |
| 刘 伟, 牟 斌 |
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(国防科技大学 航天与材料工程学院, 湖南 长沙 410073)
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| 摘要: |
| 为适用于非定常流场计算，在保证时、空二阶精度的前提下，通过引入变系数残值光顺技术，提高了四步Runge-Kutta方法的计算效率；并针对球锥简谐振动过程，数值比较Runge-Kutta多步法和“双时间法”的计算精度。 |
| 关键词: 非定常流 数值计算 双时间法 Navier-Stokes方程 |
| DOI： |
| 投稿日期：2000-09-01 |
| 基金项目:国家863高技术资助项目(863-2.98.6) |
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| A Comparison of Numerical Computational Methods for Unsteady Supersonic Flow |
| LIU Wei, MOU Bin |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The implicit varied coefficient residual smoothing technology was introduced into the four-stage Runge-Kutta scheme to increase the computational efficiency for unsteady supersonic flow under keeping second order accuracy in time and space. The computational results achieved by four-stage Runge-Kutta scheme and dual-time method were compared through numerical simulation unsteady harmonic oscillating flow around sphere-cone. |
| Keywords: unsteady flow numerical calculation dual-time method Navier-Stokes equations |
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