Free Boundary Problems for Inviscid Flows with Vorticity
Abstract
If the tangential component of velocity in the boundary layer becomes negative, the layer will thicken and in a short distance the assumptions leading to the boundary layer equations are no longer satisfied. One says the boundary layer has separated. If separation occurs a global description of the flow along the lines of the iteration alluded to above is much more difficult. In this proposal they will attempt to deal with the problem. They combine a boundary layer calculation with a free streamline wake flow for the outer potential flow. In the iteration, a separation point is determined by the boundary layer equations, a wake flow is computed and the boundary layer equations are solved again with new pressure distribution on the unseparated part of the boundary. The wake flow uses Tulin's double spiral vortices to terminate a near wake and connect with free streamlines which come together at infinity downseam. This model was proposed and developed in the work; a version with improved numerical implementation. The body is approximated by a polygon, and Schwarz-Christoffel methods are used; the computational work is in computing Schwarz-Christoffel parameters and once this is done the solution is given by an analytic expression.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1992
- Accession Number
- ADA251840
Entities
People
- Alan Elcrat
Organizations
- Wichita State University