Numerical Simulation of Internal Flow Field in Nozzle Structure
Increasing the outlet flow rate of an atomization nozzle can increase the liquid exit velocity,leading to smaller droplets and enhanced atomization efficiency.In order to suppress the cavitation effects and achieve a larger outlet flow rate,this paper establishes a numerical model of the internal flow field in the nozzle structure to analyze the flow field information such as velocity,liquid phase volume fraction,and turbulence kinetic energy distribution.Based on the mechanism of cavitation generation,several improvement schemes for the nozzle structure are proposed:reducing the nozzle length,adding nozzle chamfers,and decreasing wall surface roughness.These approaches can effectively reduce the cavitation effects,significantly increase the nozzle's outlet flow rate,and improve the atomization performance,providing reference for the optimization of nozzle structures.
simulationcavitationnozzle structuremass flow rateMixture model
万方数据
维普
