Computation of incompressible flows and direct simulation of transition to turbulence
The aim of this paper is to build a computational method efficient enough to carry out a direct simulation of transition to turbulence. This requires to have an accurate time and space scheme, as well as a fast solver as large time behaviours are needed. The flow is computed behind a cylinder in a channel and new open boundary conditions are set downstream. Numerical tests show various solutions from stable steady state to unstructured flows. To complete this study, a spectrum analysis is performed via Fourier transform.
KeywordsReynolds Number Periodic Solution Phase Portrait Incompressible Flow Direct Simulation
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