Three-dimensional wall jets: Axial flow in a stirred tank

In this article, the flow at the wall of a stirred tank is compared with turbulent wall jet behavior: Agreement is shown to be very good. For all three axial impellers studied, the wall jet is three dimensional along the wall and baffle of the tank. The expansion of the jet is linear, and the ma;rimum velocity decays with 1/z, where z is the dimensionless axial distance. These wall-jet characteristics help further the fundamental understanding and modeling of the bulk flow in a stirred tank and provide meaningful test data for CFD validation.