Viscous transonic flow over aerofoils using transonic full potential equation in a system of cartesian coordinates

Results are presented here tor viscous transonic flow over13; aerofoils to demonstrate the capabilities of a code based on transonic full potential equation in a system of Cartesian coordinates. For this purpose a code based on Carlson's scheme utilizing Cartesian coordinates has been written incorporating many improvements apart from incidentally enhancing its computational efficiency. Thus, the improvements in the numerical implementation of the surface boundary condition renners the code robust, resulting in an enhanced domain in which accurate results can be obtained from the code. Further, Green's lag entrainment method is used alonq with transpiration model to include viscous effects due to aerofoil and wake. An empirical procedure is included tc make the drag calculation more realistic. A viscous-ramp mode1 is incorporated to enable cases of strong shock boundary layer interactions to be computed. The code has been validated extensively against experimental results