浮力通量作用下非等温射流特性研究  

The Study of Non- isothermal Jets Under the Influence of Buoyancy Flux

作　　者：化亚魏 白莉[1] 车文昊 常文涛[1] 

机构地区：[1]吉林建筑大学市政与环境工程学院,长春130118

出　　处：《吉林建筑大学学报》2015年第4期33-35,共3页Journal of Jilin Jianzhu University

摘　　要：通过对百叶风口非等温射流数值模拟分析,研究浮力通量分别对射流轴心偏移、轴心速度衰减及冷风沉降的影响.研究表明,浮力通量会在一定程度上使射流轴心发生偏移;浮力通量基本不改变轴心速度衰减趋势,但会加快轴心速度衰减;由于浮力通量的影响,空调房间会产生冷风沉降现象,大温差小风速送风尤其明显.Through analyzing numerical simulation about shutter tuyere non- isothermal Jets,the influence of buoyancy flux was studied in axis offset, axial velocity attenuation and the settlement of cold wind. The conclusion is that buoyancy flux promotes axis offset to a certain extent; buoyancy flux does not substantially change the axial velocity attenuation trend, but speeds up axial velocity attenuation; due to the buoyancy flux, air- conditioned room has settlement of cold wind, especially when temperature difference is sharp and the wind speed is small.

关 键 词：浮力通量 非等温射流 轴心偏移 速度衰减 冷风沉降 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]