Euler Solutions as Limit of Infinite Reynolds Number for Separation Flows and Flows with Vortices

A combination of a f i n i t e volume d iscre t isa t ion in conjunction with carefu l ly designed d iss ipat ive terms of th i rd order, and a fourth order Runge Kutta time stepping scheme, is shown to y ie ld an e f f i c i e n t and accurate method for solving the time-dependent Euler equations in a rb i t ra ry geometric domains. Convergence to the steady state has been accelerated by the use of d i f fe ren t techniques described b r i e f l y . The main attempt of the present paper however is the demonstration of inv isc id compressible flow computations as solutions to the f u l l time dependent Euler equations over twoand three-dimensional configurations with separation. I t is c lear ly shown that in inv isc id flow separation can occur on sharp corners as well as on smooth surfaces as a consequence of compressibi l i ty ef fects. Results for nonl i f t i n g and l i f t i n g twoand three-dimensional flows with separation from round and sharp corners are presented.