抄録
The many existing analyses and experiments for reattaching jets have been mainly concerned with fairly simple models. In fact, however, the jet in wall-reattachment fiuidic devices may interact with a splitter and a decoupling vent which are necessary for fulfilling the function of the device.
In this paper, the effects of the vent and the splitter on the reattaching jet behaviour and its switching were experimentally investigated. Introducing “Run-out Flow Intensity” Prun/Ps, defined by the ratio of run-out flow total pressure to supply total pressure, the effects were made phenomenologically clear.
The concluding remarks are as follows:
(1) Though the splitter suppresses the bubble expansion due to control flow, this suppression is greatly weakened by the vent, due to the jump phenomenon of the jet.
(2) The known switching modes can be inclusively explained by introducing “Run-Out Flow Intensity”.
(3) The basic data for designing the device with vent and splitter are shown.
