环形射流作用下吸气流动的研究  

Research of suction-airflow affected by annular jet

作　　者：董立国[1] 林豹[2] 

机构地区：[1]特灵空调系统(江苏)有限公司沈阳办事处 [2]沈阳建筑工程学院

出　　处：《暖通空调》2003年第3期27-29,共3页Heating Ventilating & Air Conditioning

摘　　要：建立了环形射流作用下的吸气流动实验台 ,设计了带有产生旋转射流叶片的风口。测量了该吸气流动在不同工况下的临界射流速度、速度场分布、有效作用范围。利用回归的方法对临界射流速度的实验数据进行分析 ,得到其与吸气量、吹气口宽度、叶片数三个因素的关系表达式。用理论分析确定速度分布 ,并在其基础上计算有效作用范围 ,结果均与实验数据吻合得较好。Establishes an experiment platform for suction-airflow affected by annular jet and designs a ventilation inlet with blades engendering rotating jet. Measures critical jet velocity, velocity field distribution and effective limits of this suction-airflow under different conditions. Analyses experiment data of critical jet velocity with regression method, and formulates an expression in which critical jet velocity is correlated with the quantity of suction-air, the width of pushing-air inlet and the number of blade. Ascertains velocity distribution by theoretical analyses, and calculates effective limits of air-flow based on the analysis results. The results accord with experiment data fairly.

关 键 词：环形射流 吸气流动 临界射流速度 速度场 排风罩 污染物 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]