一种适用于热流计算的改进WENO格式

王超; 吴颂平

一种适用于热流计算的改进WENO格式

王超,
吴颂平

北京航空航天大学航空科学与工程学院, 北京 100191

基金项目: 国家自然科学基金(91016006)

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出版历程
- 收稿日期: 2011-11-12
- 刊出日期: 2012-11-28

Improved weighted essential non-oscillatory methods in hypersonic heat-flux simulation

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 数值格式是影响高超声速热流数值计算准确度的主要因素之一.根据高超声速流场的特性合理的控制了数值黏性,对WENO(weighted essentially non-oscillatory)格式进行了改进,使其适用于高超声速热流计算.研究结果表明:改进后的格式在捕捉激波时具有良好的激波辨率,在壁面附近尽量减小了数值黏性,提高了格式的黏性分辨率.数值试验也表明了这种改进算法的有效性.
- 高超声速 /
- 热流 /
- WENO格式 /
- 数值格式 /
- 数值耗散
Abstract: Numerical scheme is one of the most important factors for hypersonic heat-flux numerical simulation.Weighted essentially non-oscillatory (WENO) scheme was improved to meet the above requirementsutilizing hypersonic flow characteristics to control the numerical dissipation.The improved scheme can effectively distinguish shock and other regions of large gradients with high resolution,and reduce numerical dissipation to improve numerical high-resolution near the wall.Three numerical experiments indicate that the numerical method proposed here is effective.
- hypersonic /
- heat-flux /
- weighted essentially non-oscillatory (WENO) scheme /
- numerical scheme /
- numerical dissipation

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参考文献(15)

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