固体燃料冲压发动机燃速理论分析与数值模拟
Theoretical Analysis and Numerical Simulation of Regression Rate in SFRJ
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摘要: 从理论和数值模拟两方面探讨了固体燃料冲压发动机 (SFRJ)燃速影响因素, 给出了平均燃速与入口空气流量、空气温度以及燃烧室压强之间的指数关系式, 同时考虑了燃速沿轴向的变化。与实验数据的比较表明, 本文提出的模拟方法是正确而且可靠的。所得结果对于固体燃料冲压发动机设计和实验均具有一定指导意义。Abstract: Factors which affect regression rate in solid fuel ramjet (SFRJ) are explored through theoretical analysis.The exponent relationship of the mean regression rate with combustor pressure,inlet air mass flux and air temperature is derived.SFRJ model based on combustion and flow is established.Then the regression rate is simulated numerically by using PHOENICS software.Comparison between the calculated results and the experimental data confirms the eorrectness and reliability of the presented simulation method.
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Key words:
- solid fuels /
- combustions /
- numerical simulation
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