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

Novak, Gorazd (author), Tafuni, Angelo (author), Domínguez, José M. (author), Četina, Matjaž (author), Žagar, Dušan (author)

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.

• Language: English
• Keywords: fish passages, vertical slot fishway, numerical model, SPH, fluid particles, artificial viscosity, DualSPHysics v4.4
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2019
• Number of pages: 23 str.
• Numbering: Vol. 11, iss. 9, art. 1928
• PID: 20.500.12556/RUL-132780
• UDC: 626/627
• ISSN on article: 2073-4441
• DOI: 10.3390/w11091928
• COBISS.SI-ID: 8876641
• Publication date in RUL: 03.11.2021

Record is a part of a journal

• Title: Water
• Shortened title: Water
• Publisher: Molecular Diversity Preservation International - MDPI
• ISSN: 2073-4441
• COBISS.SI-ID: 36731653

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 15.09.2019

Secondary language

• Language: Slovenian
• Keywords: ribje steze, 3D numerični model, metoda SPH, DualSPHysics v4.4

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0180
• Name: Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij