Euler solutions as limit of infinite Reynolds number for separation flows and flows with vortices
A combination of a finite volume discretisation in conjunction with carefully designed dissipative terms of third order, and a fourth order Runge Kutta time stepping scheme, is shown to yield an efficient and accurate method for solving the time-dependent Euler equations in arbitrary geometric domains. Convergence to the steady state has been accelerated by the use of different techniques described briefly. The main attempt of the present paper however is the demonstration of inviscid compressible flow computations as solutions to the full time dependent Euler equations over two- and three-dimensional configurations with separation. It is clearly shown that in inviscid flow separation can occur on sharp corners as well as on smooth surfaces as a consequence of compressibility effects. Results for nonlifting and lifting two- and three-dimensional flows with separation from round and sharp corners are presented.
KeywordsEuler Equation Sharp Corner Transonic Flow Inviscid Flow Lead Edge Vortex
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