蒸汽喷射器效率优化方法及CFD分析

摘要

Derived the efficiency of the steam ejector formula by using the Momentum theorem, and then got the relation among Injection coefficient, Ejector efficiency and mixing speed ratio. Then, a CFD method was applied to investigate the performance of steam ejector with a different nozzle. The results indicate that the injection coefficient and ejector efficiency could be improved through structure parameter optimization.%利用动量定理对蒸汽喷射器效率计算公式进行推导,得出蒸汽喷射器效率与喷射系数及混合速比的关系式.并利用CFD数值模拟方法,对不同的喷射器效率改进设计方法进行计算模拟研究.结果表明,在同等入口及出口参数条件下,对蒸汽喷射器结构参数的改进,可以提高喷射系数及喷射器效率.