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In this paper we investigate experimentally the injection of a negatively buoyant jet into a homogenous immiscible ambient fluid. Experiments are carried out by injecting a jet of dyed fresh water through a nozzle in the base of a cylindrical tank containing rapeseed oil. The fountain inlet flow rate and nozzle diameter were varied to cover a
wide range of Richardson Ri (8 9 10-4\Ri\1.98), Reynolds Re (467\Re\5,928) and Weber We (2.40\We\308.56) numbers. Based on the Re, Ri and We values for the experiments, we have determined a regime map to define how these values may control the occurrence of
the observed flow types. Whereas Ri plays a stronger role when determining the maximum penetration height, the effect of the Reynolds number is stronger predicting the flow behaviour for a specific nozzle diameter and injection velocity.
CitationGeyer, A. [et al.]. Flow behaviour of negatively buoyant jets in immiscible ambient fluid. "Experiments in fluids", 2012, vol. 52, núm. 1, p. 261-271.
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