Accession Number : ADP001946

Title :   Viscous/Inviscid Interaction Analysis of Asymmetric Trailing-Edge Flows,

Corporate Author : UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT

Personal Author(s) : Vatsa,Veer N. ; Verdon,Joseph M.

Report Date : 1982

Pagination or Media Count : 12

Abstract : Contributions are made to finite Reynolds number, viscous/inviscid interaction theory for laminar, subsonic flow past a thin-airfoil trailing edge. In particular, an analytical/computational technique is developed for predicting high Reynolds number, attached or separated, trailing-edge and near-wake flow. The analysis is based on interacting boundary-layer theory in which the outer inviscid and the inner viscous flows are solved simultaneously to determine the complete flow past the displacement body. Inviscid solutions are based on linear airfoil theory and viscous solutions are determined by a finite difference approximation ot the boundary-layer equations cast in Levy-Lees variables. A semi-inverse viscous/inviscid iteration procedure is employed in which viscous and inviscid solutions are repeatedly determined until the inviscid pressure distribution at the displacement surface match the viscous pressure distribution.

Descriptors :   *Subsonic flow, Trailing edges, Laminar flow, Airfoils, Viscous flow, Inviscid flow, Interactions, Finite difference theory

Distribution Statement : APPROVED FOR PUBLIC RELEASE