Abstract:The transient character of the jet issuing from an upward nozzle centered in the bottom of a vertical cylindrical tank into bulk liquid of a different density was measured for varying jet Reynolds numbers and ratios of fluid densities using flow visualization and PIV. Positively buoyant jets penetrate to the free surface, driven by both momentum and buoyancy in the upward direction. The lighter jet fluid stratifies in a layer above the bulk liquid. Upon starting, a negatively buoyant jet has three stages. Firs… Show more
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