Abstract
The penetration of free hollow thin-walled turbulent water jets into water is considered. These jets are generated in conical jet aerators with various apex angles. Stable regular self-oscillation modes of this penetration process are studied experimentally. A dependence of self-oscillation periods on the apex angle α, where 45 ≤ α ≤ 80°, is analyzed for the jet discharge range 150 ≤ Q ≤ 550 cm3/s when the height H of the annular nozzle above the water surface belongs to the range 1 ≤ H ≤ 28 cm.
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