不同质量流量颗粒对压缩机叶片的冲蚀影响

Influence of Particles with Different Mass Flow Rates on the Erosion of Compressor Blades

本文采用数值模拟的方法研究了压缩机内固体颗粒对叶片的冲蚀磨损过程。在Ansys软件Fluent中,采用Realizable k-epsilon湍流模型计算气流场。本文通过建立冲蚀模型,从颗粒质量流量对冲蚀结果进行分析。分析结果表明:采用欧拉—拉格朗日两相流模型和离散冲击模型对3种不同质量流量(0.01,0.03,0.05 kg/s)固体颗粒作用下,离心压缩机气固两相流及叶片固体颗粒冲蚀磨损情况进行模拟,结果表明:质量流量为0.01,0.03,0.05 kg/s的固体颗粒主要对叶片前缘顶部、腹部、叶片一侧造成磨损,而质量流量为0.05 kg/s的粒子对叶片的冲蚀磨损效果最为明显,这就说明质量流量越大,对叶片的冲蚀率越大。

This paper uses numerical simulation to study the erosion and wear process of solid particles in the compressor.In the Ansys software Fluent,the Realizable k-epsilon turbulence model is used to calculate the airflow field.This article analyzes the erosion results from the particle mass flow by establishing an erosion model.The analysis results show that the Euler-Lagrangian two-phase flow model and the discrete impact model are used to affect solid particles with 3 different mass flows(0.01,0.03,0.05 kg/s).Next,the gas-solid two-phase flow of the centrifugal compressor and the erosion and wear of the solid particles of the blades are simulated.The results show that the solid particles with a mass flow of 0.01,0.03,and 0.05 kg/s mainly affect the top of the leading edge of the blade,abdomen,and One side of the blade causes wear,and particles with a mass flow rate of 0.05 kg/s have the most obvious effect on blade erosion and wear,which means that the greater the mass flow rate,the greater the erosion rate on the blade.