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介绍了用于简化化学反应动力模型的计算奇异值摄动方法(CSP),给出了其基本思想与具体计算方法,然后用该方法来对一氧化碳／氢气在空气中燃烧的化学反应、激波管中甲烷的点火燃烧反应实例进行了简化。从计算结果看,CSP方法是一种比较有效的化学反应模型简化方法,用该方法简化得出的简化模型不仅减少了微分求解的组分数目,而且保持了较高的计算精度,能有效提高计算效率,具有较强的工程实际价值。
The calculation of singular value perturbation method (CSP) for simplifying the chemical reaction kinetic model is introduced. The basic idea and specific calculation method are given. Then the chemical reactions of carbon monoxide / hydrogen combustion in the air, shock wave The example of ignition of methane in the tube is simplified. From the calculation results, CSP method is a more effective chemical reaction model simplification method. The simplified model simplified by this method not only reduces the number of differential solution components, but also maintains a higher accuracy and can effectively improve Calculation efficiency, with strong engineering actual value.