Turbulence Characteristics of Swirling Reacting Flow in a Combustor with Staged Air Injection  

作　　者：张健 普勇 周力行 

机构地区：[1]Department of Engineering Mechanics, Tsinghua University

出　　处：《Chinese Journal of Chemical Engineering》2006年第5期634-641,共8页中国化学工程学报（英文版）

基　　金：Supported jointly by the National Natural Science Foundation of China (No.59806006) and the Laboratory Open Fund ofTsinghua University.

摘　　要：This paper presents an experimental investigation of the turbulent reacting flow in a swirl combustor with staged air injection. The air injected into the combustor is composed of the primary swirling jet and the secon-dary non-swirling jet. A three dimension-laser particle dynamic analyzer (PDA) was employed to measure the in-stantaneous gas velocity. The probability density functions (PDF) for the instantaneous gas axial and tangential ve-locities at each measuring location, as well as the radial profiles of the root mean square of fluctuating gas axial and tangential velocities and the second-order moment for the fluctuating gas axial and tangential velocities are ob-tained. The measured results delineate the turbulence properties of the swirling reacting flow under the conditions of staged combustion.This paper presents an experimental investigation of the turbulent reacting flow in a swirl combustor with staged air injection. The air injected into the combustor is composed of the primary swirling jet and the secondary non-swirling jet. A three dimension-laser particle dynamic analyzer （PDA） was employed to measure the instantaneous gas velocity. The probability density functions （PDF） for the instantaneous gas axial and tangential velocities at each measuring location, as well as the radial profiles of the root mean square of fluctuating gas axial and tangential velocities and the second-order moment for the fluctuating gas axial and tangential velocities are obtained. The measured results delineate the turbulence properties of the swirling reacting flow under the conditions of staged combustion.

关 键 词：swirling reacting flow staged combustion turbulence characteristics 

分 类 号：TQ021[化学工程]