| Autor: |
Y. Abdallah Mohamed, G. Mohamed Abdel-Aal, T. Hemdan Nasr-Allah, Awad A. Shawky |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Journal of King Saud University: Engineering Sciences, Vol 28, Iss 1, Pp 32-40 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
1018-3639 |
| DOI: |
10.1016/j.jksues.2013.09.005 |
| Popis: |
Numerical and experimental studies were carried out to investigate the effect of different contraction ratios and entrance angles of bridge abutment on local scour depth. A 3-D numerical model is developed to simulate the scour at bridge abutment. This model solves 3-D Navier–Stokes equations and a bed load conservation equation. The k−ε turbulence model is used to solve the Reynolds-stress term. In addition, the model verification is made by comparing the computed results with existing experimental data. The results show the ability of the numerical model to simulate local scouring at bridge abutments for different contraction ratios and entrance angles of abutment with high accuracy. The determination coefficient and mean relative absolute error, in average, are 0.95 and, 0.12, respectively. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
