Zhang HP, Jiang X, Wang W, Yang Y, Xu L, Fan WC (2004) Numerical simulations of buoyant reactive jets with sidewall effects. Chinese Science Bulletin 49(19), 2105-2109. [In English]
Web link: http://dx.doi.org/10.1360/04we0008
Keywords:
buoyancy; entrainment; reactive jet; numerical simulation; transition; dynamics; flames; plume;
Abstract: The near field dynamics of buoyant reactive jets with adjacent sidewalls is investigated by time-dependent three-dimensional direct simulations. The physical problem is a fuel jet issuing vertically into an oxidant ambient environment in a corner configuration with sidewall boundaries. Simulation results are presented for two cases with different jet nozzle geometries: a corner-round reactive jet and a corner-square reactive jet with the same cross-sectional area on the nozzle plane. Buoyancy-induced large vortical structures evolve spatially in the flow field and transition to turbulence occurs downstream. Calculation of the mean flow properties shows that entrainment of the corner-round jet is stronger than that of the corner-square jet due to the stronger vortex deformation in the corner-round case.
