クロスフローファンの内部流れと送風特性

抄録

Since the configuration and variable flow rate characteristics of a cross-flow fan can be improved by changing the rotor length, they are increasingly used in the rear cooling units of mini vans, in wcich compact design and low noise characteristics are required. Although many studies have been carried out the flow and performance and it has been shown that the internal flow, depending on the configuration of the casing, has a large effect on the performance, the methods for predicting the performance and designing an efficient fan have not yet been established. In this work the internal flows analyzed by numerical simulation and measured by LDA (Laser Doppler Anemometer) are compared, and the results are found to agree with each other. Thus, information on improving the performance of the fan can be obtained using the numerical method presented in this work.