应用PDA研究ω燃烧室的气缸内紊流场

Investigation on Turbulent Flow Fluid inside Cylinder for Two Types of ω Combustion Chamber Using PDA

介绍应用三维粒子动态分析仪（PDA）对两种ω燃烧室的气缸内紊流场的测量结果，给出了在进气和压缩过程气缸内相平均速度和紊流强度的分布，分析了燃烧室结构和偏心、气门偏置及转速对气缸内紊流场的分布和变化规律的影响。

This paper describes the measurisg results of in-cyinder turbulentfiow field for two types of co combustion chamber by PDA. The distribution of meanvelocity and turbulent flow intensity in intake and compression processes inside thecylinder are presented. The effects of the combustion chamber geometry and location,valve offset and engine speed on in-cylinder distribution of turbuleni flow field, andits evolution law are discussed.