Hydraulic Simulation of Flow Around Spur Dikes
Mena Ahmed1, Abdul Halim Ghazali2, Thamer Ahmed Mohammad3, Badronnisa Yusuf4, Aminuddin Abdul Ghani5
1Mena Ahmed, Department of Dams and Water Resources Engineering, University of Mosul, Iraq. Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Malaysia.
2Abdul Halim Ghazali, Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Malaysia.
3Thamer Ahmed Mohammad, Department of Water Resources Engineering, University of Baghdad, Iraq.
4Badronnisa Yusuf, Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Malaysia.
5Aminuddin Abdul Ghani, School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus.
Manuscript received on 13 April 2017 | Revised Manuscript received on 20 April 2017 | Manuscript Published on 30 April 2017 | PP: 24-28 | Volume-6 Issue-4, April 2017 | Retrieval Number: D4887046417/17©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The morphological changes of rivers, which are manifested by bed and banks deformations, show a direct relationship with water flow and sediment transport. Spur dikes are among the most common structures used to regulate velocity distribution and control sedimentation in a river section. This paper aims to simulate the hydraulic properties of steady turbulent flow in a straight rectangular open channel which has spur dikes with various configurations, such as number, alignment and lengths. The effects of the spur dikes on the velocity distribution have been evaluated three-dimensional (3D) Computational Fluid Dynamic (CFD) method. The simulated results from the model are calibrated and validated using data obtained from physical model. Different scenarios with spur dikes were simulated, and the results were demonstrated using the isovels, velocity magnitudes and mass exchange between spur dikes fields and main flow. Eventually, each scenario gives a better understanding on employing spur dikes for river restoration, enhancing navigation (by increasing water depth and rearranging the thalweg line), and protecting abutments and pump intakes against erosion as well as creating stable aquatic habitat.
Keywords: Hydraulic Simulation, Velocity Distribution, Spur dike, River Restoration.
Scope of the Article: Hydraulic Engineering