侧面约束对吊扇流场影响的实验研究  

Effect of Lateral Constraints on Flow Field of Ceiling Fans

作　　者：王金锋 辛军哲[1] 郑才翥 Jin-feng Wang;Jun-zhe Xin;Cai-zhu Zheng(Guangzhou University;Guangdong Ruitai Ventilation and Cooling Equipment Co.,Ltd.)

机构地区：[1]广州大学 [2]广东瑞泰通风降温设备有限公司

出　　处：《风机技术》2022年第4期1-9,共9页Chinese Journal of Turbomachinery

摘　　要：吊扇作为一种有效的空气循环装置,具有节能和经济效益。目前对于吊扇流场的研究主要集中在单台侧面无/弱约束的情况下,而对强约束和多台吊扇间流场的研究较少。现通过对7种不同约束情况下所形成的吊扇流场进行实验测试,研究了吊扇与墙体间的流场、相同直径吊扇间流场及不同直径吊扇间流场的流动特性。结果显示,对于吊扇与墙体间的流场分布,其速度峰值大小和位置都会受到墙体的影响,在墙体附近流动速度也会发生变化。对于相同直径吊扇间的流场分布具有很好的对称性,吊扇间速度交界面的位置可以看成一堵虚拟的墙壁。同样,不同直径吊扇间速度交界面也可以看成一堵虚拟的墙壁。另外,根据射流力学[1]理论和现有文献[2]对吊扇的流场进行详细分区,并结合实验数据对各个区域内流场分布特点做了分析。最后,通过对实验数据的拟合对速度分布特点进行了验证。Ceiling fans are economical and energy-saving as an effective air circulation device.At present,the research on the flow field of ceiling fans mainly focuses on the case of no/weak constraint on the side of a single ceiling fan,but less research on the strong constraint and multiple ceiling fans.The same diameter ceiling fans and different diameters ceiling fans are studied through the experimental test of the flow field formed by the ceiling fan under 7 different constraints conditions.The results show that for the flow field distribution between the ceiling fan and the wall,the magnitude and position of the peak velocity are affected by the wall,and the velocity also changes near the wall.The flow field distribution between ceiling fans with the same diameter shows a good symmetry.The position of the velocity interface can be regarded as a virtual wall,regardless the different diameter of the ceiling fan.In addition,we divided the flow field of the ceiling fan in detail according to the theory of jet mechanics and the existing literature.We analyzed the characteristics of the flow field distribution in each region based on the experimental data.Finally,we also verified characteristics of the velocity distribution by fitting the experimental data.

关 键 词：吊扇 速度分布 侧面约束 

分 类 号：TH432.1[机械工程—机械制造及自动化]