CFD simulation of flow behind overflooded obstacle

Velísková, Yvetta; Chára, Zdeněk; Schügerl, Radoslav; Dulovičová, Renáta

doi:10.2478/johh-2018-0028

Abstract

This paper deals with studying of two topics – measuring of velocity profile deformation behind a over-flooded construction and modelling of this velocity profile deformation by computational fluid dynamics (CFD). Numerical simulations with an unsteady RANS models - Standard k-ε, Realizable k-ε, Standard k-ω and Reynolds stress models (ANSYS Fluent v.18) and experimental measurements in a laboratory flume (using ADV) were performed. Results of both approaches showed and affirmed presence of velocity profile deformation behind the obstacle, but some discrepancies between the measured and simulated values were also observed. With increasing distance from the obstacle, the differences between the simulation and the measured data increase and the results of the numerical models are no longer usable.

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CFD simulation of flow behind overflooded obstacle

Abstract

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