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Artikel
Numerical computations of steady and unsteady flow
in bended pipes.
| Författare: |
Hellström, F., Fuchs, L.F. |
| Dokumenttyp: |
Konferens |
| Tillstånd: |
Publicerad |
| Tidskrift: |
37th AIAA Fluid Dynamics Conference and Exhibit, June 25-28, Miami, Florida |
| Volym: |
AIAA 2007-4350
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| År: |
2007 |
AbstractThe steady and pulsative turbulent flows in curved pipes have been computed with two different modeling approaches; the Reynolds Averaged Navier-Stokes (RANS) technique and Large Eddy Simulations (LES). The results from computations of the flow in a single bended pipe have been compared to experimental data. The comparisons show poor agreement for the RANS technique at the exit of the bend, while the LES computations show better agreement with the measured velocity profiles. The pulsatile flow in a double bended pipe has also been investigated and the vortex cores are visualized to enable a better insight into the unsteady flow field and the effects of the inflow pulsations.
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