Assessment of CFD Model Performance for Flows around a Hydraulic Structure of Complex Geometry

Authors

  • Péter Grivalszki
    Affiliation

    Department of Hydraulic and Water Resources Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3., Hungary

  • Gábor Fleit
    Affiliation

    Department of Hydraulic and Water Resources Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3., Hungary

  • Sándor Baranya
    Affiliation

    Department of Hydraulic and Water Resources Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3., Hungary

  • János Józsa
    Affiliation

    Department of Hydraulic and Water Resources Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3., Hungary

    MTA-BME Water Management Research Group, Hungarian Academy of Sciences, H-1051 Budapest, Széchenyi István tér 9, Hungary

https://doi.org/10.3311/PPci.16709

Abstract

Computational Fluid Dynamics (CFD) modeling has become a widely used research tool in the hydraulic engineering community, however, for many problems the numerical model setup and even the selection of the suitable hydrodynamic solver is still a challenging task. This is the case for fine scale analysis of flow features around hydraulic structures of complex geometry, where generation of the 3D grid, application of the correct turbulence modeling approach, or modeling of the free surface all require extensive experience and knowledge. The aim of this paper is to perform a numerical hydrodynamic experiment for a hydraulic structure with complex geometry to assess the model performance, in terms of grid resolution, grid refinement methods as well as turbulence modeling. The open source modeling environment of OpenFOAM is tested and validated against laboratory measurements, moreover, practical recommendations are made for future applications of the numerical solver.

Keywords:

CFD modeling, OpenFOAM, RANS, complex hydraulic structure, turbulence modeling

Published Online

2020-10-14

How to Cite

Grivalszki, P., Fleit, G., Baranya, S., Józsa, J. “Assessment of CFD Model Performance for Flows around a Hydraulic Structure of Complex Geometry”, Periodica Polytechnica Civil Engineering, 65(1), pp. 109–119, 2021. https://doi.org/10.3311/PPci.16709

Issue

Section

Research Article