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Numerical solution for open channel flow with submerged flexible vegetation

The purpose of this study is to explore the suitability of numerical models in estimation o f velocity and flow resistance (Manning n) in open channels with totally submerged flexible vegetation. A three dimensional (3D) numerical model based on arbitrary Lagrangian-Eulerian (ALE) approach has b...

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Main Authors: Yusuf, Badronnisa, Karim, O. A., Osman, S. A.
Format: Article
Language:English
Published: FEIIC 2009
Online Access:http://psasir.upm.edu.my/id/eprint/15856/1/Numerical%20solution%20for%20open%20channel%20flow%20with%20submerged%20flexible%20vegetation.pdf
http://psasir.upm.edu.my/id/eprint/15856/
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spelling my.upm.eprints.158562015-11-04T03:53:39Z http://psasir.upm.edu.my/id/eprint/15856/ Numerical solution for open channel flow with submerged flexible vegetation Yusuf, Badronnisa Karim, O. A. Osman, S. A. The purpose of this study is to explore the suitability of numerical models in estimation o f velocity and flow resistance (Manning n) in open channels with totally submerged flexible vegetation. A three dimensional (3D) numerical model based on arbitrary Lagrangian-Eulerian (ALE) approach has been employed to simulate the effects of various characteristics of selected flexible vegetations to the velocity distribution and flow resistance. The modeling involved simultaneous solution of Navier Stokes equation f or o pen channel flow, s tress-strain relationship for the vegetation structure and ALE algorithm for the moving vegetation boundaries. The numerical computation has been carried out with a n aid of a commercial finite element software package, COMSOL Multiphysics 3.4. The numerical results were validated using experimental data carried out in the laboratory using real vegetations. The accuracy of numerical model compared t o experimental results w as measured in terms of mean absolute error (MAE). The results show that the numerical model which combined the three applications as mentioned above able to predict the velocity and the flow resistance coefficient in open vegetated channel with reasonable accuracy. The MAE calculated for velocity and Manning n is ±0.02. FEIIC 2009 Article NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/15856/1/Numerical%20solution%20for%20open%20channel%20flow%20with%20submerged%20flexible%20vegetation.pdf Yusuf, Badronnisa and Karim, O. A. and Osman, S. A. (2009) Numerical solution for open channel flow with submerged flexible vegetation. International Journal of Engineering and Technology, 6 (1). pp. 39-50. ISSN 1823-1039
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The purpose of this study is to explore the suitability of numerical models in estimation o f velocity and flow resistance (Manning n) in open channels with totally submerged flexible vegetation. A three dimensional (3D) numerical model based on arbitrary Lagrangian-Eulerian (ALE) approach has been employed to simulate the effects of various characteristics of selected flexible vegetations to the velocity distribution and flow resistance. The modeling involved simultaneous solution of Navier Stokes equation f or o pen channel flow, s tress-strain relationship for the vegetation structure and ALE algorithm for the moving vegetation boundaries. The numerical computation has been carried out with a n aid of a commercial finite element software package, COMSOL Multiphysics 3.4. The numerical results were validated using experimental data carried out in the laboratory using real vegetations. The accuracy of numerical model compared t o experimental results w as measured in terms of mean absolute error (MAE). The results show that the numerical model which combined the three applications as mentioned above able to predict the velocity and the flow resistance coefficient in open vegetated channel with reasonable accuracy. The MAE calculated for velocity and Manning n is ±0.02.
format Article
author Yusuf, Badronnisa
Karim, O. A.
Osman, S. A.
spellingShingle Yusuf, Badronnisa
Karim, O. A.
Osman, S. A.
Numerical solution for open channel flow with submerged flexible vegetation
author_facet Yusuf, Badronnisa
Karim, O. A.
Osman, S. A.
author_sort Yusuf, Badronnisa
title Numerical solution for open channel flow with submerged flexible vegetation
title_short Numerical solution for open channel flow with submerged flexible vegetation
title_full Numerical solution for open channel flow with submerged flexible vegetation
title_fullStr Numerical solution for open channel flow with submerged flexible vegetation
title_full_unstemmed Numerical solution for open channel flow with submerged flexible vegetation
title_sort numerical solution for open channel flow with submerged flexible vegetation
publisher FEIIC
publishDate 2009
url http://psasir.upm.edu.my/id/eprint/15856/1/Numerical%20solution%20for%20open%20channel%20flow%20with%20submerged%20flexible%20vegetation.pdf
http://psasir.upm.edu.my/id/eprint/15856/
_version_ 1643826050129461248
score 13.211869

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