进气道与弹体内外流场一体化数值模拟方法研究

建立了进气道/导弹内外流场的CFD数值模型,并对某固冲导弹的纵向特性进行了实例计算分析。结果显示,数值计算不仅可以直接提取进气道的内流特性,而且可以直接提取进气道和导弹全弹的外流气动特性。对于评估进气道与导弹弹体相互之间的气动干扰特性,也能提供直接的数值依据。该方法简便易行,可望推广应用于固冲等吸气式导弹的总体方案设计中,具有明显的实用价值。

Study on Integrated Numerical Simulation of Inlet-Body Internal and external Flow Fields

The integrated CFD numerical model of inlet and body was established and the longitudinal characters were calculated for a certain solid propellant rocket ramjet engine missile. The results show that it can be obtained not only internal flow characteristics of inlet but also external flow characteristics of inlet and missile directly through numerical simulation. Also, the data of body-inlet flow field interference can be gained directly too. This method is simple and feasible, and can be generalized to project design of air-breathing missile such as solid propellant rocket ramjet engine missile, and has obvious practical importance.