Author(s): S. Wu; N. Rajaratnam; C. Katopodis

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Abstract: The results of a laboratory investigation on the behaviour of plane turbulent jets discharging vertically upwards into a stagnant shallow water body have shown that for any depth H in terms of the half width b 0 of the nozzle, the jet could be in an oscillating mode if the velocity at the nozzle U 0 is greater than a critical value of [0.009(Hlb 0) + 0.357] √gH where g is the acceleration due to gravity. When the jet is oscillating, the frequency of oscillation ƒ is equal to 0.18 √g/H. An earlier study on vertical circular jets in shallow water did not find such an oscillating flow pattern.

DOI: https://doi.org/10.1080/00221689809498634

Year: 1998