A Numerical Study of the Effect of Submerged Groyne Shapes on Flow Pattern in Straight Open-Channels

Message:
Abstract:
River banks are generally subject to erosion due to water flow and groynes can be utilized to preserve them and maintain their stability. Accordingly, understanding the characteristics of flow around these types of hydraulic structures for the design and performance optimization usages through experimental or numerical investigations would be inevitable. In this research, the flowpattern around a submerged groyne is analyzed making use of the finite difference code; FLOW-3D. Subsequently, the obtained numerical results for longitudinal velocity and free surface flow are compared to and verified by the respective experimental results. Finally, new numerical simulations were conducted employing identical computational assumptions utilized in the preceding simulation in order to examine the impact of various new groynes structures on the flow pattern. The analysis of the obtained numerical data reveals that among the investigated structures, the T-shaped groyne is more practical and it can effectively reduce the separation zone and therefore, decrease the coastal erosions.
Language:
Persian
Published:
International Bulletin of Water Resources and Development, Volume:3 Issue: 1, 2015
Page:
72
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