倾斜等直径长管中气粉两相流粉粒速度的理论计算  

Theoretical calcalation of particle velocity in gas-particle flow through inclined long duct with constant section

作　　者：韩旭[1] 静肃 彭一川[1] 肖泽强[1] 

机构地区：[1]东北大学 [2]沈阳建筑工程学院

出　　处：《沈阳建筑工程学院学报》1993年第4期347-354,共8页Journal of Shenyang Archit Civil Eng Univ: Nat Sci

摘　　要：根据质量、动量和能量守恒等基本原理,建立了描述倾斜等直径长管中气粉两相流行为的一阶常微分方程组.数值计算结果表明:粉粒终速随管长增加而增大,粉粒终速随粉粒密度或粒径增加而减小;在质量流量比(λ<0.7)较小时,粉粒终速与质量流量比、管道倾斜角α无关.BAsed on the laws of conservation of mass,energy and momentus,a system of closed first-order ordinary differential equations is established to describe the behavior of gas-particle flow passing through inclined long duct with constant section.The numerical results of the calculation show that the terminal particle velocities are increasing with the length of duct and the velocities are decreasing with the increase of the particle's density or size.The numerical results also show that the final particle velocities are independent of the mass flow ratio and inclined angle of the duct within the ranges of small mass flow ratio.

关 键 词：气粉两相流 粉粒 速度 数值计算 

分 类 号：V211.17[航空宇航科学与技术—航空宇航推进理论与工程]