孔板空调风口送风射流的数值模拟  

NUMERICAL SIMULATION OF AIR JET FROM PERFORATED PANELS

作　　者：赵彬[1] 李先庭[1] 彦启森[1] 

机构地区：[1]清华大学建筑学院建筑技术科学系,北京100084

出　　处：《力学与实践》2002年第1期18-21,共4页Mechanics in Engineering

摘　　要：介绍Ｎ点风口模型用于数值模拟室内空气流动时描述孔板类送风口的入流边界条件．然后采用该风口模型对不同的孔板风口出流条件算例进行数值计算，并就轴心速度衰减、射流扩展角以及断面流速分布等射流特性与实验数据进行了对比．比较结果表明，Ｎ点风口模型用于描述数值模拟室内空气流动的孔板类风口入流边界条件，可以获得工程上足够满意的结果．A new method called N-point supply opening model for describing inlet boundary conditions of indoor airflow simulation is proposed to deal with perforated panels. Examples of two perforated panels under various inlet velocities are presented. Both the simulated results and experimental data of centerline velocity distribution, angle of divergence and jet velocity profile are discussed. Comparisons between predicted results and experimental data show that the new approach can well describe those rather complicated inlet boundary conditions of perforated panel in the indoor airflow simulation.

关 键 词：风口模型 计算流体力学 室内空气流动 孔板空调 送风射流 数值模拟 N点风口模型 入流边界条件 

分 类 号：TB657.2[一般工业技术—制冷工程] O358[理学—流体力学]