2026-04-14T16:17:30Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/815712026-01-15T20:01:11Zcom_10324_1166com_10324_931com_10324_894col_10324_1338

Fuentes Pérez, Juan Francisco Tuhtan, Jeffrey A. Romão, Filipe Ferreira, M.T. Kruusmaa, M. Branco, Paulo 2026-01-15T06:30:01Z 2026-01-15T06:30:01Z 2019-02 Journal of Hydraulic Engineering, February 2019, vol. 145, n. 2 0733-9429 https://uvadoc.uva.es/handle/10324/81571 10.1061/(ASCE)HY.1943-7900.0001565 06018020-1 2 06018020-6 Journal of Hydraulic Engineering 145 Vertical slot fishways (VSFs) are hydraulic structures which allow fish to swim around obstacles in rivers. These structures are subject to variations in discharge of either hydrological or operational origin, which result in non-uniform water depth profiles, i.e. differences in the water drops across the slots (ΔH) and mean depths (h0) across the pools. Although non-uniform conditions are present in most VSFs, they are rarely considered in the design and evaluation of fishways. The aim of this work is to provide an introductory analysis of how non-uniform water depth profiles affect the hydrodynamics within the pools of VSFs. This study shows that flow patterns are controlled by changes in ΔH and h0 in addition to slope and other geometrical alterations, as previously suggested. Non-uniformity alters the flow structure in pools and the spatial distributions of hydrodynamic variables. Consequently, critical thresholds of hydrodynamic variables for fish may be reached in VSFs designed with recommended slopes when operating under non-uniform conditions. eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ American Society of Civil Engineers (ASCE) Attribution-NonCommercial-NoDerivatives 4.0 Internacional Ingeniería hidráulica Recursos hídricos Mecánica de fluidos Ecología aplicada Pasos para peces Hydraulics of vertical slot fishways: Non-uniform profiles info:eu-repo/semantics/article