| 气流掺混的数值模拟 |
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| 引用本文： | 徐旭.气流掺混的数值模拟[J].北京航空航天大学学报,1998,24(3):369-372. |
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| 作者姓名： | 徐旭 |
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| 作者单位： | 北京航空航天大学 宇航学院 |
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| 基金项目： | 863高技术计划(863-2-3-4-5)资助项目 |
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| 摘 要： | 采用显式的TVD MacCormack格式的时间分裂形式求解了平板上横流流场的二维N-S方程和组分输运方程,得到了流场中气体超音速流动和混合的结构图谱.为了获得对近壁附面层分离较好的模拟效果,采用了Lam和Bremhorst的低雷诺数ｋ-ε模型来模拟流动中的湍流粘性.计算结果表明,该方法可以用来求解横流流场中的气流掺混问题.
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| 关 键 词： | 计算流体力学 数值模拟 湍流掺混 横流 TVD格式 |
| 收稿时间： | 1997-01-24 |
Numerical Simulation of Gas Mixing in Cross-flow |
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| Xu Xu,Zhang Zhenpeng.Numerical Simulation of Gas Mixing in Cross-flow[J].Journal of Beijing University of Aeronautics and Astronautics,1998,24(3):369-372. |
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| Authors: | Xu Xu Zhang Zhenpeng |
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| Institution: | Beijing University of Aeronautics and Astronautics,School of Astronautics |
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| Abstract: | A time-split explicit TVD MacCormack algorithm is used to solve the two-dimensional N-S equations coupled with species diffusion equations.Both molecular and turbulent properties of viscosity,thermal conductivity and mass conductivity are calculated.In order to deal with the near wall separation of boundary layer,the low Reynolds number ｋ-ε turbulence model of Lam and Bremhorst is used in this procedure.A sample of plane cross-flow is used to test the reliability and accuracy of this method and the results show that this scheme can be applied to solve the problem of supersonic flow fields with gas mixing,the solutions are satisfactory. |
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| Keywords: | computation fluid mechanics numerical simulation turbulent mixing cross flow TVD algorithm |
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