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Artikel
Steady solutions of the Navier-Stokes equations by selective frequency damping
| Författare: |
Åkervik, E.Å., Brandt, L.B., Henningson, D.S.H., Hoepffner, J.P.J., Marxen, O., Schlatter, P. |
| Dokumenttyp: |
Artikel |
| Tillstånd: |
Publicerad |
| Tidskrift: |
Phys. Fluids |
| Volym: |
18
068102 |
| År: |
2006 |
AbstractA new method, enabling the computation of steady solutions of the Navier-Stokes equations in globally unstable configurations, is presented. We show that it is possible to reach a steady state by damping the unstable frequencies. This is achieved by adding a dissipative relaxation term proportional to the high-frequency content of the velocity fluctuations. Results are presented for boundary-layer cavity-driven separation and a separation bubble induced by an external pressure gradient.
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