周辺噴流型ACVの動特性(第4報)

ファン・ダクト特性

抄録

During the dynamic motion of ACV, the flow rate of the jet varies and the total pressure at the outlet of the fan changes with the flow rate. Moreover, the flow in the duct is unsteady, so the difference of pressure on both sides of the duct is different from the one of the steady flow condition. Dynamic motions of ACV are induced by oscillations of the ground board and they are analyzed numerically. Taking account of the characteristics of the fan and the duct, the dynamic motions are investigated and the results are compared with those obtained under the condition of the constant total pressure of the jet.