【摘要】 汽-液两相流激波是汽水引射式增压换热器增压的主要原因,然而鲜见相关研究。本文通过建立数学模型分析计算,对汽-液两相流动的正激波进行了研究,并与理想气体激波进行比较分析。在两相激波后汽相接近完全凝结,激波前马赫数与空泡率对激波有较大影响。与理想气体激波比较发现,两相流激波前后压力和马赫数的变化趋势与理想气体激波是一致的。可用能分析证明,激波过程是一个不可逆过程,激波后的熵增加,可用能减少,遵守热力学第二定律。更多还原

【Abstract】 The paper studies the shock wave of vapor-liquid two-phase mixture,which is very important in a pressure-gain steam injector.The mathematic model is built and the calculation is done.After the shock the vapor is nearly condensed completely and the upstream Mach number and the volume ratio of vapor are the most important factors to the shock.We also find the similar characters of pressure and Mach number be-tween two-phase and single phase shock waves.The analysis of available energy shows that the shock process is an irreversible process with entropy increase.更多还原