20.500.12556/RUL-132780 A numerical study of fluid flow in a vertical slot fishway with the smoothed particle hydrodynamics method 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. fish passages vertical slot fishway numerical model SPH fluid particles artificial viscosity DualSPHysics v4.4 ribje steze 3D numerični model metoda SPH DualSPHysics v4.4 true false true Angleški jezik Slovenski jezik Članek v reviji 2021-11-03 09:28:04 2021-11-03 09:28:07 2022-09-12 04:13:41 0000-00-00 00:00:00 2019 0 0 23 str. iss. 9, art. 1928 Vol. 11 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 626/627 2073-4441 10.3390/w11091928 8876641 RAZ_Novak_Gorazd_2019.pdf RAZ_Novak_Gorazd_2019.pdf 1 8B38FA7929B07B17E1E9A3EDD01E056B 93e5b4e0b87a2800ebd3c3e81126ffb18f7c7f4d9ddf95e279d01a3b5fc587db 275ff35a-3c80-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150479 https://www.mdpi.com/2073-4441/11/9/1928 1 ee1d8d43-3c7f-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150478 Fakulteta za gradbeništvo in geodezijo 0 0 0