Investigation on the Influence of Inlet Particle-entrained Gas Total Temperature on the Separation Efficiency of Gas and Solid in Supersonic Flow
Supersonic gas flow entraining solid particles changed the direction after passing through an oblique shock wave,but the solid particles maintained original movement direction due to their large inertia.So the solid particles will depart from the gas phase flow.A three-dimensional numerical simulation of gas and solid separation in supersonic flow was carried out by using ANSYS CFX software based on Euler-Lagrange model.The influence of inlet total temperature of particle-entrained gas on gas-solid two-phase flow field and the track of solid particles of different sizes was analyzed in detail.The simulation result shows that the separation efficiency of particle with diameter of 10μm is 79.09%when the total temperature of inlet particle-entrained gas is 873.15K.When the total temperature of inlet particle-entrained gas is 1000K and 1100K,the separation efficiency of the particle with the same diameter will be 80.3%and 80.9%respectively.As the total temperature increases from 873.15K to 1000K and 1100K,the corresponding separation efficiency is 56.3%,58.5%,59.9%for the particle with diameter of 5 μm and 88.9%,89.4%,89.7%for the particle with diameter of 20μm.The total pressure loss of particle-entrained gas at the total temperature of 873.15K varies from 27KPa to 39KPa,which changes with the diameter of particle.The total pressure loss of particle-entrained gas increases very little when the total temperature increases.
Supersonic gas-solid separation Total temperature Separation efficiency Pressure loss Oblique shock wave
Jiangnan Zhu Tieyu Gao Guojun Li
Department of Thermal Power Engineering,Xian Jiaotong University,No.28,Xianning West Road,Xian,Shaanxi,P.R.China
国际会议
桂林
英文
1-8
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）