Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
Online ISSN : 2185-467X
ISSN-L : 2185-467X
Annual Journal of Hydraulic Engineering, JSCE, Vol.67
NUMERICAL MODEL OF LOCAL SCOUR AROUND PIER BASED ON THE 3D ANALYSIS OF SEDIMENT PARTICLE MOTION
Hidenori ISHIIKohei MUROTANIKoji NAKADE
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2022 Volume 78 Issue 2 Pages I_1201-I_1206

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Abstract

 This paper describes a numerical model developed to simulate the flow and scour around a bridge pier. The flow is modeled by large eddy simulation. The morphological change of riverbeds is calculated by coupling sediment transport with models for sediment pick-up and deposition. The sediment transport is calculated by 3D momentum equations of sediment particle. Sediment pick-up and deposition are mod-eled by stochastic models for the purpose of reducing computational demand. The numerical model was applied to the local scour around a vertical cylinder pile under clear water condition. The results agreed well with experimental data. It is concluded that this model can evaluate a local scour considering 3D movements of sediment particles.

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© 2022 Japan Society of Civil Engineers
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