Numerical Study of Confined Flow Past an Airfoil Injector with a Planar Jet

Vortex shedding from an airfoil injector in a channel is investigated by using a numerical solution for unsteady, two-dimensional, Navier-Stokes Equations. A second-order implicit finite-volume scheme is employed to solve the equations. The effect on vortex shedding of a planar jet injected from the rear of the injector is studied. The effect of the jet velocity on the vortex shedding and its drag and lift coefficients are also studied at different blockage ratios and Reynolds numbers for laminar flow. Initial results to validate previous numerical simulations are performed on a square cylinder with and without a planar jet. Good agreement between the current results and the available experimental and numerical results is demonstrated. One objective for using the present airfoil geometry is to improve the mixing process and flame lifting in order to reduce the thermal load. The present study also seeks answers to several questions regarding: the structure of the vortex shedding past an airfoil, the aerodynamic characteristics of laminar flow around complicated shapes such as an airfoil, and the influence of the planar jet on the aerodynamic characteristics of the flow.