Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars
In this paper, the effects of different widths and lengths of collar around bridge abutment on local scour depth are studied numerically and experimentally. Numerical simulation of scour hole evolution at bridge abutment is more convenient than the experimental modeling, because the computational co...
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doaj-651bb71ace6e4da9b2509c4bc21bb1412021-06-02T02:28:37ZengElsevierAlexandria Engineering Journal1110-01682016-06-015521455146310.1016/j.aej.2016.01.021Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collarsT. Hemdan Nasr-Allah0Yasser Abdallah Mohamed Moussa1G. Mohamed Abdel-Aal2A. Shawky Awad3Benah University, Faculty of Engineering, EgyptZagazig University, Faculty of Engineering, EgyptZagazig University, Faculty of Engineering, EgyptBenah University, Faculty of Engineering, EgyptIn this paper, the effects of different widths and lengths of collar around bridge abutment on local scour depth are studied numerically and experimentally. Numerical simulation of scour hole evolution at bridge abutment is more convenient than the experimental modeling, because the computational cost and time have significantly decreased. The numerical model solves 3-D Navier–Stokes equations and bed load conservation equation. The k–ε turbulence model is used to solve the Reynolds-stress term. The simulated results are verified using the laboratory experiments. In addition, the multiple linear regressions are applied to correlate the maximum local scour depth with the other independent parameters. It was found that the relative length of collar 0.73 around bridge abutment reduces the maximum scour depth by 69% compared to no-collar case. Moreover, the results of 3-D numerical model and regression models agree well with the experimental data.http://www.sciencedirect.com/science/article/pii/S1110016816000272Numerical modelsCollarBridge abutmentsLocal scourSSIIM |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T. Hemdan Nasr-Allah Yasser Abdallah Mohamed Moussa G. Mohamed Abdel-Aal A. Shawky Awad |
spellingShingle |
T. Hemdan Nasr-Allah Yasser Abdallah Mohamed Moussa G. Mohamed Abdel-Aal A. Shawky Awad Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars Alexandria Engineering Journal Numerical models Collar Bridge abutments Local scour SSIIM |
author_facet |
T. Hemdan Nasr-Allah Yasser Abdallah Mohamed Moussa G. Mohamed Abdel-Aal A. Shawky Awad |
author_sort |
T. Hemdan Nasr-Allah |
title |
Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars |
title_short |
Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars |
title_full |
Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars |
title_fullStr |
Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars |
title_full_unstemmed |
Experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars |
title_sort |
experimental and numerical simulation of scour at bridge abutment provided with different arrangements of collars |
publisher |
Elsevier |
series |
Alexandria Engineering Journal |
issn |
1110-0168 |
publishDate |
2016-06-01 |
description |
In this paper, the effects of different widths and lengths of collar around bridge abutment on local scour depth are studied numerically and experimentally. Numerical simulation of scour hole evolution at bridge abutment is more convenient than the experimental modeling, because the computational cost and time have significantly decreased. The numerical model solves 3-D Navier–Stokes equations and bed load conservation equation. The k–ε turbulence model is used to solve the Reynolds-stress term. The simulated results are verified using the laboratory experiments. In addition, the multiple linear regressions are applied to correlate the maximum local scour depth with the other independent parameters. It was found that the relative length of collar 0.73 around bridge abutment reduces the maximum scour depth by 69% compared to no-collar case. Moreover, the results of 3-D numerical model and regression models agree well with the experimental data. |
topic |
Numerical models Collar Bridge abutments Local scour SSIIM |
url |
http://www.sciencedirect.com/science/article/pii/S1110016816000272 |
work_keys_str_mv |
AT themdannasrallah experimentalandnumericalsimulationofscouratbridgeabutmentprovidedwithdifferentarrangementsofcollars AT yasserabdallahmohamedmoussa experimentalandnumericalsimulationofscouratbridgeabutmentprovidedwithdifferentarrangementsofcollars AT gmohamedabdelaal experimentalandnumericalsimulationofscouratbridgeabutmentprovidedwithdifferentarrangementsofcollars AT ashawkyawad experimentalandnumericalsimulationofscouratbridgeabutmentprovidedwithdifferentarrangementsofcollars |
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1721409296445472768 |