结构参数对喷嘴性能影响的数值研究  

Numerical Investigation for Effect of Structural Parameters on Nozzle Performance

作　　者：刘国库[1] 潘刚[2] 郑洪涛[2] 

机构地区：[1]海军驻沈阳地区发动机专业军事代表室,沈阳110015 [2]哈尔滨工程大学动力与能源工程学院,哈尔滨150001

出　　处：《航空发动机》2015年第5期28-32,共5页Aeroengine

基　　金：燃气轮机工程研究项目资助

摘　　要：为了更好地了解离心式喷嘴的结构参数对其性能的影响,采用两相界面追踪流体体积方法(Volume Of Flui d,VOF)对离心式喷嘴内部的气液两相流动进行了数值模拟研究。结果表明:增大喷嘴旋流室直径与出口段直径比DS/D0,能够减小液膜厚度和喷雾锥角;增大旋流室长径比LS/DS,能够增大液膜厚度,减小喷雾锥角;增大出口段长径比L0/D0,会使液膜变薄,喷雾锥角减小;增大旋流室半锥角θS,会使液膜变厚,喷雾锥角减小。In order to investigate effect of structural parameters on nozzle performance, the gas-liquid two-phase flow of swirl atomizer was simulated by VOF interface tracking method. The simulation results show that increasing of Ds/Do leads to the decrease of film thickness and spray cone angle. Increasing of Ls/Ds increases film thickness and decreases spray cone angle. Increasing of L0/D0 results in the decrease of film thickness and spray cone angle. Increasing of Os increases film thickness and decreases spray cone angle.

关 键 词：离心式喷嘴 VOF 液膜厚度 喷雾锥角 燃气轮机 燃烧室 

分 类 号：TK16[动力工程及工程热物理—热能工程]