CHARACTERISTIC OF AIR-FLOW FIELDS AND ACOUSTIC NOISE IN OUTDOOR UNIT OF AIR CONDITIONER
Jiang Cailing Tian Jie Chen Jiangping Ouyang Hua Du Zhaohui Chen Zhijiu (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030)
Considering features of air flow and acoustic fields inside an outdoor unit of split-type air conditioner, a numerical simulation on air flow in the system using CFD method is performed. The airflow velocity distributions which are in the flow channel and outlet of axial flow fan are analyzed in detail. Numerical results are evaluated by the laser particle image veloci- metry (PIV) method. And numerical results are well agreement with the PIV results. Based on CFD numerical simulation, discrete frequency noise of system is predicted using Lowson model. And the predicted results are agreement with the measured ones. Numerical model developed can efficiently analyze the characteristics of air flow and will benefit the further aerodynamic acoustic analysis.
【CateGory Index】： TU831