摘要
本文发展了平衡粒子模拟方法(EPSM),建立了与高温气体化学反应动力学理论相匹配的EPSM耦合模型,并通过混合参数进行流区的自动识别,将EPSM方法与蒙特卡罗直接模拟方法(DSMC)结合,构造了可模拟化学反应流动的DSMC/EPSM混合算法。应用该算法对汲及化学反应的轴对称情况下高超声速平头圆柱绕流流场进行模拟,将结果与DSMC方法的结果进行比较,验证了新算法对求解化学反应流动的可行性。将混合算法的计算效率与DSMC方法的计算效率进行比较,发现混合算法能够大大提高计算效率。
The Equilibrium Particle Simulation method (EPSM) is developed to build a EPSM model suited for chemical reaction flows in high temperature gas. The Monte Carlo method (DSMC) is combined with the EPSM method to make a hybrid DSMC/EPSM method by using a 'hybrid parameter' to divide the different flow regions. The hypersonic gas flow of flat-nosed cylinder is simulated by using hybrid DSMC/EPSM code and the DSMC method. Through the comparison of the results, the effectiveness of the DSMC/EPSM code is proved. The computation efficiency of the hybrid DSMC/EPSM method and the DSMC method is compared. It is proved that the hybrid DSMC/EPSM method is more efficient than the DSMC method.
出处
《空气动力学学报》
CSCD
北大核心
2003年第4期476-481,共6页
Acta Aerodynamica Sinica
基金
国家自然科学基金资助项目(19902021).
