DF激光器燃烧室反应流场的一种新的计算求解方法
Numerical solution to multi-component chemical equilibrium flows in DF chemical laser combustion chamber
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摘要: 使用了一种新的方法来计算燃烧驱动DF激光器燃烧室多组分化学反应流场。首先引入了元素的分布方程，然后根据化学平衡的热力计算方法求解每一位置的组分及温度。这样，在计算低速流场时，就避免了处理化学反应源项引起的数值计算过程中的方程刚性问题，也减少了组分方程的数量。结果显示,这种燃烧室的注氦方式能够在一定程度上冷却燃烧室壁面。Abstract: This paper gives a new method of solution to fluid field in the DF chemical laser combustion chamber. The method is a numerical solution of multi-component chemical equilibrium flows with the elements distributing equations and thermodynamic calculation of chemical equilibrium. This method avoids the problem of stiff equations caused by chemical reaction source terms in the components equations, and the number of components equations is reduced. The result shows that the wall of the combustion chamber is cooled down to a certain extent by the gas helium injected.
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Key words:
- chemical laser /
- chemical equilibrium flows /
- cfd /
- element distribution equation /
- combustion chamber
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