前進翼及び後退翼の違いがエンジン冷却ファンの性能に与える影響

抄録

The purpose of this paper is to clarify the influence of the difference between forward- and swept-back configuration on the cooling fan performance. As the first report, this paper focused on P-Q characteristic and analyzed the flow structure around the ring-fans using RANS calculations after experimental validation. As a result, it was found that P-Q characteristic had the remarkable difference between the configurations while there was only a little difference using propeller fan which investigated in previous reports. Then the fluid mechanism which induced the difference of P-Q characteristics using CFD results was discussed.