This study simulates the behavior of a jet issuing into a two-layer density-\nstratified fluid in a cylindrical tank and the resulting mixing phenomena.\nThe upper and lower fluids are water and an aqueous solution of sodium\nchloride (NaCl), respectively, with the lower fluid issuing diagonally upward\nfrom a nozzle on the bottom of the tank. The angle between the centerline of\nthe jet and the tank bottom is 60�š. The phenomena when the Reynolds number\nRe of the jet is 475, 1426, and 2614 are simulated. The mass concentration\nof the aqueous solution of NaCl is 0.02. The simulation successfully grasps the\njet behavior and the resulting mixing, which agree with the authorsâ�� experimental\nresults at the corresponding Re value. The secondary flows that appear\nin the horizontal cross-sections consist of a pair of vortices and flows along\nthe tank wall. The secondary flow at the density interface represents the intrusion\nof an internal density current, which gives rise to mixing along the interface.
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