Study of vortex flows generated by a pulsed turbulent buoyant jet
In the paper, the results of numerical modeling of the formation and propagation of vortex structures generated by a pulsed turbulent buoyant jet have been presented for the Reynolds number Re = 1.5×104, the parameter P = 3.65, and the Grashof number Gr = 3.9×105. A three-dimensional turbulent flow model based on the unsteady Reynolds equations was adopted. The angle between the jet and gravity directions was varied from 0° to 180°. The vortex cloud movement was tracked up to the moment when the maximum velocity value in the cloud became equal to 3.5% of the inlet velocity. For various α values, the power-law relationships describing the propagation of the vortex cloud and a decrease in the maximum velocity value and temperature within the cloud were obtained.