分级进风燃烧室内高温气固两相流动的PDA测量

PDA MEASUREMENT OF HIGH TEMPERATURE GAS-PARTICLE FLOW IN A COMBUSTOR WITH STAGED AIR INJECTION

本文建立了分级进风燃烧室高温气固两相流动的实验装置。利用三维激光粒子动态分析仪(PDA),测量了燃烧室内有气相燃烧的高温气固流动的两相瞬时速度场。得到了平均轴向与切向速度、轴向与切向脉动速度均方根值和轴向-切向脉动速度关联量的分布。

A test facility for high temperature gas-particle flow in a combustor with staged air injection was set up. The Three-Dimension Laser Particle Dynamic Analyzer （PDA） was utilized to measure the instantaneous velocity of high temperature gas-particle flow with gaseous combustion. The distributions of time-averaged axial and tangential velocities, root mean square of axial and tangential fluctuating velocities, and correlation moment for axial and tangential fluctuating velocities are obtained for both gas and particle phases.