地板送风旋流风口数值模型的比较  

Comparison of simulation models of swirl diffuser for underfloor air supply system

作　　者：曹双华[1] 张黎[1] 丰振[1] 

机构地区：[1]上海理工大学

出　　处：《制冷与空调》2015年第1期24-26,23,共4页Refrigeration and Air-Conditioning

摘　　要：地板送风系统的送风口设置使人体处于风口射流区,因此对送风口的特性描述在很大程度上影响模拟的准确性。本文采用3种数值模型对旋流风口进行模拟,并就送风口附近的风速分布及轴心速度衰减等与试验数据进行对比,以确定模拟旋流风口的最优数值模型。结果表明,与采用真实的旋流风口模型相比,分别定义3个分速度入口边界条件的方法可以准确模拟旋流风口的室内流场,且网格数量大幅减少。For underfloor air supply system, the position of air distributor usually makes human body in the air jet region of the distributor,so the numerical methods for describing the characteristics of air distributor affect the accuracy of the simulation seriously. Three types of simulation models are selected to carry out the simulations of swirl diffuser. In order to find the optimal numerical model of swirl diffuser,the simulated results and experimental data of air velocity distribution and axial velocity decay around the air distributor are compared. The results show that the method of defining three component speeds fusers as the inlet boundary condition can simulate indoor flow field caused by swirl dif accurately,and the amount of mesh is greatly reduced,compared with the model of swirl diffuser.

关 键 词：地板送风 旋流风口 风口模型 数值模拟 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]