| 预处理方法在化学非平衡流场数值模拟中的应用 |
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| 引用本文： | 潘沙,李桦,范晓樯,田正雨.预处理方法在化学非平衡流场数值模拟中的应用[J].空气动力学学报,2006,24(3):380-384. |
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| 作者姓名： | 潘沙 李桦 范晓樯 田正雨 |
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| 作者单位： | 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： | 将预处理方法发展应用于化学非平衡流场的数值模拟中。采用有限差分,LU-SGS隐式方法对二维可压化学非平衡控制方程进行了耦合求解,对化学源项和无粘项隐式处理,粘性项则采用显式。通过化学反应剪切层和激波点火的算例表明,所采用的数值方法能够有效求解化学非平衡流场,证明了本算法的可行性,为下一步的工程应用奠定了基础。
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| 关 键 词： | 预处理方法 化学非平衡 有限差分方法 数值模拟 |
| 文章编号： | 0258-1825（2006）03-0380-05 |
| 收稿时间： | 2005-08-14 |
| 修稿时间： | 2005-08-142005-10-26 |
Application of preconditioning methods in numerical simulation for chemical non-equilibrium flows |
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| PAN Sha,LI Hua,FAN Xiao-qiang,TIAN Zheng-yu.Application of preconditioning methods in numerical simulation for chemical non-equilibrium flows[J].Acta Aerodynamica Sinica,2006,24(3):380-384. |
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| Authors: | PAN Sha LI Hua FAN Xiao-qiang TIAN Zheng-yu |
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| Institution: | Institute of Aerospace and Material Engineering, National University of Defense Technology, ChangSha 410073, China |
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| Abstract: | A precondition method was applied to chemical non-equilibrium flow.Finite difference method and LU-SGS implicit iterative method were used to solve the flow equations and species transport equations in fully coupled manner.In numerical simulation,the scheme treats chemical source terms and inviscid flux implicitly but treats viscous term explicitly.Computations were carried in reacting shear layer and shock igniting,which proved that the methods and programs could be used in chemical non-equilibrium flow.All these works built foundations for further application. |
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| Keywords: | precondition method chemical non-equilibrium finite difference method numerical simulation |
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