【作者】 曹玉吉； 张世英； 张宏； 高双林； 朱杰堂；

【Author】 Cao Yu-ji Zhang Shi-ying Zhang Hong Gao Shuang-lin Zhu Jie-tang (The Second Artillery Engineering College.Shanxi.Xi’an.710072)

【机构】 第二炮兵工程学院；

【摘要】 本文基于反应流针对不同台阶高度的超燃冲压发动机中超音速燃烧室开展数值模拟,研究在不同的台阶高度下其对燃烧室速度场和燃烧效率的影响,进而考察对燃烧室性能的影响。计算针对台阶高度分别为0.1、0.15和0.2的三种进口高度,采用七组份八步化学反应动力学模型。结果表明台阶高度增大可以一定程度的提高燃烧效率,但会导致压力扰动传播至隔离段的不利结果。更多还原

【Abstract】 The numerical simulation of active supersonic combustor flow field based on reaction flow has been done in Scramjet with different steps.The research work was aimed at the velocity field and combustion efficiency,to find the step height effect on combustor performance.Seven components with eight steps chemistry reaction kinetics model was used in the simulation,with the back step height at 0.1、0.15 and 0.2 of inlet height.Result shows:the increase of step height can improve combustion efficiency at a certain degree,but the disadvantage caused of disturb of pressure may diffuse to isolator.更多还原