低流量域における多翼送風機の内部流動解析

抄録

In the recent automotive industry, more and more vehicles are equipped with ventilation systems on their seats to improve passenger comfort. Since the centrifugal fan mounted on this system needs to blow air into a narrow space between the occupant and the seat, the pressure loss increases and the operation is performed at a low flow rate region. General centrifugal fans are operated under free inflow conditions because they have a space at the suction. In the seat ventilation system, which is the target of this research, the air flows into the blower through a narrow air flow path between the seat surface and the occupant, so that the inflow direction is limited to the radial direction. In this report, first, the effects of the radial inflow on the fan and the effects of the suction resistance installed upstream on the fan were examined by experiments. Next, fluid simulation was performed and compared with experimental data.