Numerical modeling of local scour around hydraulic structure in sandy beds by dynamic mesh method

Numerical modeling of local scour around hydraulic structure in sandy beds by dynamic mesh method Local scour, a non-negligible factor in hydraulic engineering, endangers the safety of hydraulic structures. In this work, a numerical model for simulating local scour was constructed, based on the open source code computational fluid dynamics model OpenFOAM. We consider both the bedload and suspended load sediment transport in the scour model and adopt the dynamic mesh method to simulate the evolution of the bed elevation. We use the finite area method to project data between the three-dimensional flow model and the two-dimensional (2D) scour model. We also improved the 2D sand slide method and added it to the scour model to correct the bed bathymetry when the bed slope angle exceeds the angle of repose. Moreover, to validate our scour model, we conducted and compared the results of three experiments with those of the developed model. The validation results show that our developed model can reliably simulate local scour. Journal of Ocean University of China Springer Journals

Numerical modeling of local scour around hydraulic structure in sandy beds by dynamic mesh method

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Science Press
Copyright © 2017 by Science Press, Ocean University of China and Springer-Verlag GmbH Germany
Earth Sciences; Oceanography; Meteorology
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