Analysis of Circulation Controlled Airfoils
Abstract
A self-contained analysis for arbitrary circulation controlled airfoils in incompressible flow is developed. The analysis predicts the blowing slot conditions required to produce a specified lift coefficient on a given airfoil with given free stream conditions. An iterative procedure is used to find the blowing slot conditions that allow the Thwaites condition of constant pressure in the separated region to be satisfied. With the input given, a potential flow analysis is performed using the Theodorsen method. Boundary layer analyses for the lower and upper surfaces then yield the separation pressure on the lower surface and the boundary layer properties at the slot on the upper surface. The flow is initially laminar and usually becomes turbulent. The Cebeci, Smith finite difference method is used and an eddy viscosity model is used for turbulent flow. Blowing slot values are assumed and a turbulent wall jet analysis is performed to determine the wall pressure at separation on the upper surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA013334
Entities
People
- Edward H. Gibbs
- Nathan Ness
Organizations
- West Virginia University