【摘要】 利用热力学有关理论 ,在考虑相变弛豫现象的基础上 ,推导出汽液两相介质中音速的简便计算式 ,并在一定压力范围内进行了计算 ,获得了压力、汽隙率、相变系数等对音速的影响规律 .研究结果表明 ,弛豫现象的存在对音速的大小有较大影响 .同时 ,通过分析还发现 ,γ =0时的计算结果更接近于实际情况 .更多还原

【Abstract】 Considering of relaxation phenomenon, an expression of the sound velocity in vapor-liquid two-phase flow is derived by employing thermodynamic principles in the thesis. Through calculation, the effect of pressure, dryness, void fraction, coefficient on sound velocity are obtained. The results show that the existence of relaxation phenomenon has great influence on sound velocity, and the calculation results show much agreement with the fact whenγequals zero.更多还原