開水路中に噴出される三次元乱流噴流の自励振動

概要

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One of the authors has shown a new hydraulic oscillation. A three-dimensional turbulent jet oscillates periodically when it is issued into an abruptly expanded flow passage, and this oscillation is also caused in the case of gas-liquid two-phase flow. Using this phenomenon, the flow rates of not only single-phase flow but also gas-liquid two-phase flow can be measured. This oscillatory phenomenon is caused in an abruptly expanded flow passage with end plates, but by issuing a three-dimensional liquid (water) jet into an abruptly expanded flow passage without an upper end plate, i. e., an open channel, the jet also oscillates periodically. The condition under which the oscillation is caused, the relationships among the oscillatory frequency, configuration of flow passage, depth of water, flow rate, and others will be clarified.
一般社団法人日本機械学会の論文
1996-02-25