导弹燃气流的数值模拟

摘要

The overpressure ,high temperature ,high speed and vibration of the gas flow during the ballistic missile launching have se-rious influence on the missile itself and the personnel ,equipment and environment .Simulating missile launching can provide the basis for reducing the impact of the gas flow field ,and provide technical support to the safe use of missile .A certain type of ballistic mis-siles was taken as the research object ,the characteristics of complex gas jet of the missile engine were analyzed ,the two dimensional gas flow field of the launching position was simulated .The overpressure ,temperature of the flow field were obtained ,and the safety range of missile launching was pointed out .%弹道导弹发射时产生的燃气流的超压、高温、高速、振动等不利条件对导弹自身和周围人员、设备、环境有着严重的影响。模拟导弹发射时产生的燃气流场可对减少这些影响、提高导弹寿命和生存能力、安全使用导弹提供技术支撑。以某型号弹道导弹为研究对象，分析了导弹发动机复杂燃气自由射流的特点，模拟了发射阵地燃气二维流场，得到了地面不同距离下的超压、温度、组分等变量的理论数据，对发射阵地环境安全进行了分析并指出安全范围。