1421 フリップフロップノズル噴流の自励振動の解明(振動に及ぼすノズル形状の影響)

概要

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Flow and pressure in a fluidic oscillator attached to a plane turbulent jet have been studied experimentally by using hot-wire anemometers and semiconductor pressure transducers. The effects of throat width of the diffuser passage on the jet oscillation is examined by measuring ensemble averaged velocities and pressures. The results show that as the throat width is decreased, the oscillation frequency increases slightly, and the oscillation ceases finally in case throat width is narrower than a certain width. The ratio of detaching time to attaching time is independent of the throat width. The oscillation amplitudes of jet displacement, port pressure difference and connecting duct flow decrease with decreasing the throat width.
社団法人日本機械学会の論文
2003-08-05