煤粉颗粒在平面射流喷口附近的湍流弥散研究  

STUDY ON TURBULENT DISPERSION OF SOLID PARTICLES IN PLANE JET NEAR THE NOZZLE

作　　者：梁勇军 施学贵 徐旭常[1] 

机构地区：[1]清华大学热能工程系

出　　处：《工程热物理学报》1993年第4期439-443,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金

摘　　要：一、前言 气-固两相流是多相流研究中活跃的领域之一。煤粉燃烧,喷雾燃烧,喷雾冷却,流化床燃烧等等,都与固体颗粒或液滴的湍流弥散有密切的关系。颗粒的湍流弥散是指颗粒在流体湍流场中的迁移行为。The motion of coal particles in a two dimension plane jet was investigated by using the multipulse in-line holography and the influences of Saffman force, Magnus force, gravity and viscous drag on the particle motion were studied numerically. It was found that the initial velocity of particles controlled their dispersion in initial period.

关 键 词：煤粉颗粒 湍流弥散 煤粉 燃烧 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]