Analysis of threedimensional separated flow with the boundarylayer equations
Abstract
An analysis based on the boundarylayer equations is presented for the prediction of threedimensional separated flow. In this analysis, the boundarylayer equations are solved with finite difference techniques in four inverse (pressure is unknown) modes. One inverse mode, in which the component of vorticity normal to the surface is specified at the boundarylayer edge, is shown to result in an elliptic system of boundarylayer equations which has departure solutions when solved with a forward marching technique. The accuracy of the present analysis in the other three inverse modes using forward marching techniques is demonstrated for: (1) separated flow over an infinite swept wing which has been rendered three dimensional with a rotated coordinate system; and (2) a threedimensional separated flow problem analyzed by Smith. The principal conclusion of this paper is that the methodology is now in place to solve the boundarylayer equations for threedimensional separated flow and hence work should now be focused on the development of threedimensional viscousinviscid interaction procedures.
 Publication:

7th Computational Fluid Dynamics Conference
 Pub Date:
 1985
 Bibcode:
 1985cfd..conf...99E
 Keywords:

 Boundary Layer Equations;
 Computational Fluid Dynamics;
 Separated Flow;
 Three Dimensional Flow;
 Finite Difference Theory;
 Incompressible Flow;
 Laminar Flow;
 Swept Wings;
 Viscous Flow;
 Fluid Mechanics and Heat Transfer