Numerical and Experimental Study of Abrupt Wave Interaction with Vertical and Inclined Rectangular Obstacles

Authors

1 Department of Civil Engineering, Faculty of Engineering, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran

2 Department of Water Engineering, Facu lty of Water and Soil, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran

3 Department of Water Engineering, Faculty of Agricultural Engineering, Shahid Bahonar University of Kerman, Kerman, Iran

Abstract

The aim of the present paper is the study of interaction of the abrupt wave with vertical and inclined rectangular obstacles. For this purpose, in the first step, two experiments have been done. The tests were performed with smooth rectangular cross-section channels, and related data were extracted using digital image processing. Flow behavior was recorded with one adjacent CCD camera through the glass walls of the entire downstream channel. In the second step, the numerical study has been done by a mesh-free particle Lagrangian method (Incompressible Smoothed Particle Hydrodynamics, ISPH) and a mesh-based Eulerian method (Finite Volume Method with Volume of Fluid surface tracking approach, FV-VOF). The capabilities of the numerical methods in simulation of the sudden variations free surface flows have been assessed. A comparison between the computed results and the experimental data shows that both numerical models simulate the mentioned flows with reasonable accuracy.

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History

  • Received: 13 June 2020
  • Revised: 24 September 2020
  • Accepted: 05 November 2020
  • Available online: 30 December 2020

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