VALIDATION OF A FINITE DIFFERENCE METHOD FOR FREE SURFACE CALCULATION | ||||
| The International Conference on Civil and Architecture Engineering | ||||
| Article 41, Volume 9, 9th International Conference on Civil and Architecture Engineering, May 2012, Page 1-8 PDF (413.71 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iccae.2012.44365 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| HOSSAM ELDIN MOHAMED ELHANAFY | ||||
| Military technical college, Cairo, Egypt. | ||||
| Abstract | ||||
| ABSTRACT: This paper describes the validation of a numerical hydraulic model which uses a finite difference method for modelling unsteady free surface water flow over common hydraulic structures. The numerical hydraulic model is based on the Saint Venant equations (SVES) using a staggered finite difference scheme to evaluate the discharge, the water stage, and the cross section area within the domain. While the Modified Method of Characteristics (MMOC) is applied to achieve open boundary downstream and overcome the problem of reflections there. A series of simulations are compared against an existing set of experimental data and other models for the free surface flow over a broad-crested weir. The developed model is promising and capable of simulating different cases of water flow that contain both steady and unsteady flow. This model could be used as a stepping stone for different purposes including parameter identification (Ding et al. 2004), Flood risk assessment (Elhanafy and Copeland 2007) ,uncertainty in the predicted flood (Elhanafy and Copeland 2007) and (Elhanafy et al. 2007). | ||||
| Keywords | ||||
| Saint Venant equations (SVES); validation; weirs; CFD; free surfaces; staggered finite difference scheme | ||||
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