The application of a minimum specific energy concept for a fish ladder design

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU144591" target="_blank" >RIV/00216305:26110/22:PU144591 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.pan.pl/dlibra/publication/140185/edition/122756/content" target="_blank" >https://journals.pan.pl/dlibra/publication/140185/edition/122756/content</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.24425/ace.2022.140185" target="_blank" >10.24425/ace.2022.140185</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The application of a minimum specific energy concept for a fish ladder design

Popis výsledku v původním jazyce

Structural solutions in terms of fish ladders and the use of natural materials to construct them often raise concerns regarding the possibility of using the standard calculation methods. The fish ladder being designed on the Wisłok river consists of three pools, separated from each other by baffles made of rock boulders. The purpose of this study was to analyze water surface profiles for fish ladder at specific values of flow rates. The paper presents the results of hydraulic calculations under the conditions of constant flow rate based on the concept of a minimum specific energy. According to this method, water flow through boulders is critical. Thus, it does not take into account head losses, which are hard to estimate and which are the integral part of typical calculation methods, e.g. the use of equations to determine the flow rate of a weir. An additional advantage of this method is that there is no need to assume the flow pattern of one specific weir. Verification calculations of the water depths were conducted using the HEC–RAS software, under an assumption of an one-dimensional steady water flow. Water depths in the fish ladder, calculated using both methods, were similar, despite the adopted different calculation concepts, and can be used in ichthyologic analyses.

Název v anglickém jazyce

The application of a minimum specific energy concept for a fish ladder design

Popis výsledku anglicky

Structural solutions in terms of fish ladders and the use of natural materials to construct them often raise concerns regarding the possibility of using the standard calculation methods. The fish ladder being designed on the Wisłok river consists of three pools, separated from each other by baffles made of rock boulders. The purpose of this study was to analyze water surface profiles for fish ladder at specific values of flow rates. The paper presents the results of hydraulic calculations under the conditions of constant flow rate based on the concept of a minimum specific energy. According to this method, water flow through boulders is critical. Thus, it does not take into account head losses, which are hard to estimate and which are the integral part of typical calculation methods, e.g. the use of equations to determine the flow rate of a weir. An additional advantage of this method is that there is no need to assume the flow pattern of one specific weir. Verification calculations of the water depths were conducted using the HEC–RAS software, under an assumption of an one-dimensional steady water flow. Water depths in the fish ladder, calculated using both methods, were similar, despite the adopted different calculation concepts, and can be used in ichthyologic analyses.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/TH04020154" target="_blank" >TH04020154: Optimalizace výstavby, oprav a provozování asfaltobetonových těsnicích plášťů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Archives of Civil Engineering

ISSN

1230-2945

e-ISSN

2300-3103

Svazek periodika

68

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

13

Strana od-do

555-568

Kód UT WoS článku

000778776300032

EID výsledku v databázi Scopus

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