论文部分内容阅读
壁面型线决定了超声速除湿器的内部流场特征,进而对组分凝结特性和分离效率等产生重要影响。本文借助数值方法研究了内扩张型超声速除湿器流场径向分布特性以及组分凝结特性。计算结果表明除湿器内气流的周向速度、压力、温度在不同截面呈现出不同的径向分布特征。加速流道内壁面侧的气流温度低于外壁面侧,使组分凝结首先发生于流道内侧,为达到气液分离效果必须增加分离段长度。因此需要对除湿器加速段流道进行优化设计,以改善除湿器工作性能。
The wall profile determines the internal flow field characteristics of the supersonic dehumidifier, which in turn has a significant impact on the component condensation characteristics and separation efficiency. In this paper, the radial distribution characteristics and the condensation characteristics of the components of the inner-dilatometer supersonic dehumidifier are studied numerically. The calculation results show that the circumferential velocity, pressure and temperature of the airflow in the dehumidifier show different radial distribution characteristics in different sections. The temperature of the airflow on the inner wall surface side of the accelerating flow passage is lower than that on the outer wall surface, so that the condensation of the constituents first occurs inside the flow passage. In order to achieve the gas-liquid separation effect, the separation section length must be increased. Therefore, it is necessary to optimize the flow passage of the dehumidifier acceleration section to improve the working performance of the dehumidifier.