新型超音速压气机内气固两相流场CFD模拟分析  

CFD Simulation of Gas-solid Flow in a New Type Supersonic Air Compressor

作　　者：祝爱娟[1] 牛军[2] 梅丹[1] 王龙飞[2] 向晓东[1] 

机构地区：[1]钢铁冶金与资源综合利用省部共建实验室,武汉科技大学,湖北武汉430081 [2]中国北方发动机研究所,山西大同036037

出　　处：《制冷空调与电力机械》2010年第4期40-42,共3页Refrigeration Air Conditioning & Electric Power Machinery

摘　　要：为预测和预防压气机叶轮磨损,基于多相流理论对超音速压气机内的三维气固两相流场进行数值模拟。在分析中将压气机内的流场按可压缩气体处理,同时考虑温度对颗粒运动轨迹的影响。模拟结果表明,叶片出口端部前缘,温度达到最大,颗粒的运动速度也达到最大值。由此判明叶轮磨损最严重处位于叶片端部。In order to predict and prevent the compressor impeller erosion caused by the high speed solid particulate motion,the three-dimensional gas-solid flow in the compressor was simulated numerically based on the theory of multi-phase flow. In this simulation,the particle trajectory affected by the temperature in the compressor must be considered because the high gas velocity leads to the gas temperature increasing. The results of this simulation showed that the maximum temperature appears at the tip of the blade. And the particle velocity will reach the maximum value at the end of the blade finally. Therefore, it can be predicted that the most serious erosion must be located at the tip of the impeller.

关 键 词：压气机 固体颗粒 两相流 磨损 数值模拟 

分 类 号：TH452[机械工程—机械制造及自动化]