A numerical study of fluid flow in a vertical slot fishway with the smoothed particle hydrodynamics method

Gorazd Novak, Angelantonio Tafuni, José M. Domínguez, Matjaž Četina, Dušan Žagar

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Fishways have a great ecological importance as they help mitigate the interruptions of fish migration routes. In the present work, the novel DualSPHysics v4.4 solver, based on the smoothed particle hydrodynamics method (SPH), has been applied to perform three-dimensional (3-D) simulations of water flow in a vertical slot fishway (VSF). The model has been successfully calibrated against published field data of flow velocities that were measured with acoustic Doppler velocity probes. A state-of-the-art algorithm for the treatment of open boundary conditions using buffer layers has been applied to accurately reproduce discharges, water elevations, and average velocity profiles (longitudinal and transverse velocities) within the observed pool of the VSF. Results herein indicate that DualSPHysics can be an accurate tool for modeling turbulent subcritical free surface flows similar to those that occur in VSF. A novel relation between the number of fluid particles and the artificial viscosity coefficient has been formulated with a simple logarithmic fit.

Original languageEnglish (US)
Article number1928
JournalWater (Switzerland)
Volume11
Issue number9
DOIs
StatePublished - Sep 1 2019

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

Keywords

  • Artificial viscosity
  • Fish passages
  • Fluid particles
  • Numerical model
  • SPH
  • Vertical slot fishway

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