Validation of a CFD model for flow in meandering rivers using an experimental test-setup

First results

K. Delecluyse, W. Brantegem, Peter A Troch, R. Verhoeven, J. Vierendeels

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 3D Reynolds Averaged Navier Stokes (RANS) model of a meandering channel with rectangular cross-section has been developed using the commercial software package FLUENT 6.2. This model solves the 3D Navier-Stokes equations using the PISO scheme for the pressure-velocity coupling and the realizable k-?̊ model for turbulence closure. Output of the numerical model is compared to validation experiments conducted in a physical model, which represents two wavelengths of a regime channel and allows for the measurement of flow patterns at several discharges and variable bed forms. The computed water depths and velocity profiles of the CFD model output are in good agreement with the physical model results. The simulations slightly underpredict the streamwise velocities, which reach a maximum just before the apex of the meander bend, at the inner bank in the lower part of the flow depth. The CFD model also captures the motion of the secondary current or transverse flow well, showing the same direction of current along the entire second wavelength.

Original languageEnglish (US)
Title of host publicationWIT Transactions on Engineering Sciences
Pages55-64
Number of pages10
Volume59
DOIs
StatePublished - 2008
Externally publishedYes
Event7th International Conference on Advances in Fluid Mechanics, AFM'08 - The New Forest, United Kingdom
Duration: May 21 2008May 23 2008

Other

Other7th International Conference on Advances in Fluid Mechanics, AFM'08
CountryUnited Kingdom
CityThe New Forest
Period5/21/085/23/08

Fingerprint

Computational fluid dynamics
Rivers
Physical Model
Wavelength
FLUENT
Model
Output
Apex
Flow Pattern
Velocity Profile
Navier-Stokes
Software Package
Turbulence
Navier-Stokes Equations
Closure
Cross section
Transverse
Entire
Software packages
Flow patterns

Keywords

  • CFD
  • Experimental results
  • Meandering rivers
  • Numerical model
  • Open channel flow

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Mathematics(all)

Cite this

Delecluyse, K., Brantegem, W., Troch, P. A., Verhoeven, R., & Vierendeels, J. (2008). Validation of a CFD model for flow in meandering rivers using an experimental test-setup: First results. In WIT Transactions on Engineering Sciences (Vol. 59, pp. 55-64) https://doi.org/10.2495/AFM080061

Validation of a CFD model for flow in meandering rivers using an experimental test-setup : First results. / Delecluyse, K.; Brantegem, W.; Troch, Peter A; Verhoeven, R.; Vierendeels, J.

WIT Transactions on Engineering Sciences. Vol. 59 2008. p. 55-64.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Delecluyse, K, Brantegem, W, Troch, PA, Verhoeven, R & Vierendeels, J 2008, Validation of a CFD model for flow in meandering rivers using an experimental test-setup: First results. in WIT Transactions on Engineering Sciences. vol. 59, pp. 55-64, 7th International Conference on Advances in Fluid Mechanics, AFM'08, The New Forest, United Kingdom, 5/21/08. https://doi.org/10.2495/AFM080061
Delecluyse K, Brantegem W, Troch PA, Verhoeven R, Vierendeels J. Validation of a CFD model for flow in meandering rivers using an experimental test-setup: First results. In WIT Transactions on Engineering Sciences. Vol. 59. 2008. p. 55-64 https://doi.org/10.2495/AFM080061
Delecluyse, K. ; Brantegem, W. ; Troch, Peter A ; Verhoeven, R. ; Vierendeels, J. / Validation of a CFD model for flow in meandering rivers using an experimental test-setup : First results. WIT Transactions on Engineering Sciences. Vol. 59 2008. pp. 55-64
@inproceedings{65fbd51e095c4636ade0b0bcc627814a,
title = "Validation of a CFD model for flow in meandering rivers using an experimental test-setup: First results",
abstract = "A 3D Reynolds Averaged Navier Stokes (RANS) model of a meandering channel with rectangular cross-section has been developed using the commercial software package FLUENT 6.2. This model solves the 3D Navier-Stokes equations using the PISO scheme for the pressure-velocity coupling and the realizable k-?̊ model for turbulence closure. Output of the numerical model is compared to validation experiments conducted in a physical model, which represents two wavelengths of a regime channel and allows for the measurement of flow patterns at several discharges and variable bed forms. The computed water depths and velocity profiles of the CFD model output are in good agreement with the physical model results. The simulations slightly underpredict the streamwise velocities, which reach a maximum just before the apex of the meander bend, at the inner bank in the lower part of the flow depth. The CFD model also captures the motion of the secondary current or transverse flow well, showing the same direction of current along the entire second wavelength.",
keywords = "CFD, Experimental results, Meandering rivers, Numerical model, Open channel flow",
author = "K. Delecluyse and W. Brantegem and Troch, {Peter A} and R. Verhoeven and J. Vierendeels",
year = "2008",
doi = "10.2495/AFM080061",
language = "English (US)",
isbn = "9781845641092",
volume = "59",
pages = "55--64",
booktitle = "WIT Transactions on Engineering Sciences",

}

TY - GEN

T1 - Validation of a CFD model for flow in meandering rivers using an experimental test-setup

T2 - First results

AU - Delecluyse, K.

AU - Brantegem, W.

AU - Troch, Peter A

AU - Verhoeven, R.

AU - Vierendeels, J.

PY - 2008

Y1 - 2008

N2 - A 3D Reynolds Averaged Navier Stokes (RANS) model of a meandering channel with rectangular cross-section has been developed using the commercial software package FLUENT 6.2. This model solves the 3D Navier-Stokes equations using the PISO scheme for the pressure-velocity coupling and the realizable k-?̊ model for turbulence closure. Output of the numerical model is compared to validation experiments conducted in a physical model, which represents two wavelengths of a regime channel and allows for the measurement of flow patterns at several discharges and variable bed forms. The computed water depths and velocity profiles of the CFD model output are in good agreement with the physical model results. The simulations slightly underpredict the streamwise velocities, which reach a maximum just before the apex of the meander bend, at the inner bank in the lower part of the flow depth. The CFD model also captures the motion of the secondary current or transverse flow well, showing the same direction of current along the entire second wavelength.

AB - A 3D Reynolds Averaged Navier Stokes (RANS) model of a meandering channel with rectangular cross-section has been developed using the commercial software package FLUENT 6.2. This model solves the 3D Navier-Stokes equations using the PISO scheme for the pressure-velocity coupling and the realizable k-?̊ model for turbulence closure. Output of the numerical model is compared to validation experiments conducted in a physical model, which represents two wavelengths of a regime channel and allows for the measurement of flow patterns at several discharges and variable bed forms. The computed water depths and velocity profiles of the CFD model output are in good agreement with the physical model results. The simulations slightly underpredict the streamwise velocities, which reach a maximum just before the apex of the meander bend, at the inner bank in the lower part of the flow depth. The CFD model also captures the motion of the secondary current or transverse flow well, showing the same direction of current along the entire second wavelength.

KW - CFD

KW - Experimental results

KW - Meandering rivers

KW - Numerical model

KW - Open channel flow

UR - http://www.scopus.com/inward/record.url?scp=58749087716&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58749087716&partnerID=8YFLogxK

U2 - 10.2495/AFM080061

DO - 10.2495/AFM080061

M3 - Conference contribution

SN - 9781845641092

VL - 59

SP - 55

EP - 64

BT - WIT Transactions on Engineering Sciences

ER -