CFD simulation of flow behind overflooded obstacle

Yvetta Velísková; Zdeněk Chára; Radoslav Schügerl; Renáta Dulovičová

doi:10.2478/johh-2018-0028

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CFD simulation of flow behind overflooded obstacle

Journal of Hydrology and Hydromechanics

Volume 66 (2018): Issue 4 (December 2018)

By: Yvetta Velísková, Zdeněk Chára, Radoslav Schügerl and Renáta Dulovičová

Open Access

|Oct 2018

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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Articles in this issue

DOI: https://doi.org/10.2478/johh-2018-0028 | Journal eISSN: 1338-4333 | Journal ISSN: 0042-790X

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Language: English

Page range: 448 - 456

Submitted on: Oct 31, 2017

Accepted on: Mar 23, 2018

Published on: Oct 29, 2018

Published by: Slovak Academy of Sciences, Institute of Hydrology

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

Velocity profile,

Computational fluid dynamics (CFD),

Free surface flow,

Bridge,

ADV,

Laboratory flume,

Numerical simulation,

RANS models

Related subjects:

Engineering,

Introductions and overviews,

Engineering, other

© 2018 Yvetta Velísková, Zdeněk Chára, Radoslav Schügerl, Renáta Dulovičová, published by Slovak Academy of Sciences, Institute of Hydrology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 66 (2018): Issue 4 (December 2018)