A POTENTIAL FLOW MODEL FOR THE FLOW FIELD INDUCED BY A JET EXHAUSTING INTO A UNIFORM CROSS FLOW

摘要

A novel method is presented for the calculation of the flow field induced by a turbulent jet exhausting into a uniform cross flow. Outside the jet boundary, potential flow is assumed. The jet effects are represented by a source distribution on the jet boundary. The boundary conditions on the jet boundary (normal velocity) are calculated from a set of quadratic equations, representing the transfer of momentum from the croak flow to the jet. The resulting Neumann problem for the potential flow field is solved by the "panel method". Comparison of theoretical with measured values of the pressure coefficients on a flat plate, from which the jet is blown, shown only qualitative agreement. This is attributed to the behavior of t! e boundary layer on the plate, interacting with the jet.