喷射器二维流场与性能的数值分析  

Numerical Analysis on Two Dimensional Flow Field and Performance of Ejector

作　　者：陈辉[1] 陈修娟[1] 肖立川[1] 

机构地区：[1]江苏工业学院机械与能源工程学院,江苏常州213016

出　　处：《煤矿机械》2008年第6期57-60,共4页Coal Mine Machinery

摘　　要：用CFD数值模拟的方法实现了蒸汽喷射器二维流场的分布和变工况特性。结果表明:喷嘴出口后工作蒸汽与引射蒸汽并非等压混合,速度值与压力值呈现出连续振荡逐渐趋于稳定的趋势。同时分析了工作流体压力、引射流体压力以及出口压力对喷射器性能的影响,并探讨了各参数对喷射器工作性能产生影响的原因。Realized the two dimensional flow field of steam ejector by the method of CFD numerical simulation, and discussed the maneuvering condition of ejector. The results of the analysis indicate that when jet flows commixed to the jet flows, it is not in equpressure model. The number of velocity and pressure is concussion first and then go to stabilization. In addition, an analysis was conducted of the impact of such parameters as the operating steam pressure, the pressure of jet flows and mixed fluids on the operating performance of the ejector, and analyzed its reason.

关 键 词：蒸汽喷射器 数值模拟 喷射系数 变工况 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]