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Multiblock-Parallel Computation of Turbulent Flows and Their Effects on Cohesive Sediment in Intake Channel

Author(s): S. Ushijima N.; Yoneyama; N. Tanaka

Linked Author(s): Norio Tanaka

Keywords: Multiblock grid; Parallel computation; Body-fitted coordinates; Mudresuspension

Abstract: A multiblock-parallel computation technique, which is advantageous to deal with complicated-shaped hydraulics structures and to improve computational efficiency as well, is applied to the three-dimensional turbulent flows in an intake channel. From the predicted friction velocity arising on the bottom surface, resuspension areas of the cohesive sediment in the channel are specified with the critical friction velocity, which has been investigated in flume tests. As a result, it is shown that the present numerical method is applicable to evaluate the effects of flow fields on bottom sediments as well as to predict three-dimensional turbulent flows in complicatedshaped hydraulics structures.


Year: 1999

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