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Numerical prediction of a draft tube flow taking into account uncertain inlet conditions

Abstract : The swirling turbulent flow in a hydroturbine draft tube is computed with a nonintrusive uncertainty quantification (UQ) method coupled to Reynolds-Averaged Navier- Stokes (RANS) modelling in order to take into account in the numerical prediction the physical uncertainties existing on the inlet flow conditions. The proposed approach yields not only mean velocity fields to be compared with measured profiles, as is customary in Computational Fluid Dynamics (CFD) practice, but also variance of these quantities from which error bars can be deduced on the computed profiles, thus making more significant the comparison between experiment and computation.
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https://hal.archives-ouvertes.fr/hal-00736772
Contributor : Christophe Corre <>
Submitted on : Saturday, September 29, 2012 - 4:28:47 PM
Last modification on : Wednesday, July 8, 2020 - 4:54:37 PM

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Olivier Brugière, Guillaume Balarac, Christophe Eric Corre, Olivier Métais, Emmanuel Flores, et al.. Numerical prediction of a draft tube flow taking into account uncertain inlet conditions. 26th IAHR Symposium on Hydraulic Machinery and Systems, Aug 2012, Pékin, China. pp.1-8. ⟨hal-00736772⟩

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