Submergence coefficient of full-width sharp-edged broad-crested rectangular weirs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU133886" target="_blank" >RIV/00216305:26110/19:PU133886 - isvavai.cz</a>

Výsledek na webu

<a href="https://content.sciendo.com/view/journals/johh/67/4/article-p329.xml" target="_blank" >https://content.sciendo.com/view/journals/johh/67/4/article-p329.xml</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/johh-2019-0022" target="_blank" >10.2478/johh-2019-0022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Submergence coefficient of full-width sharp-edged broad-crested rectangular weirs

Popis výsledku v původním jazyce

Full-width sharp-edged broad-crested rectangular weirs in the range 0.1 < h/L <= 0.3 situated in rectangular channels are frequently used in submerged flow conditions. To determine the discharge for the submerged flow, submergence coefficient and modular limit shall be known. This article deals with their determination upon a theoretic derivation and experimental research. The equation for modular limit has been determined from energy balance with simplifications. To validate it, extensive experimental research was carried out. However, the derived equation is too complicated for practical use which is why it was approximated by a simple equation applicable for the limited range. The equation for submergence coefficient was derived by modifying Villemonte's application of the principle of super-position and its coefficients were determined using the data from experimental research of many authors. The new system of equations computes the discharge more accurately than other authors' equations, with the error of approximately +/- 10% in full range of the measured data.

Název v anglickém jazyce

Submergence coefficient of full-width sharp-edged broad-crested rectangular weirs

Popis výsledku anglicky

Full-width sharp-edged broad-crested rectangular weirs in the range 0.1 < h/L <= 0.3 situated in rectangular channels are frequently used in submerged flow conditions. To determine the discharge for the submerged flow, submergence coefficient and modular limit shall be known. This article deals with their determination upon a theoretic derivation and experimental research. The equation for modular limit has been determined from energy balance with simplifications. To validate it, extensive experimental research was carried out. However, the derived equation is too complicated for practical use which is why it was approximated by a simple equation applicable for the limited range. The equation for submergence coefficient was derived by modifying Villemonte's application of the principle of super-position and its coefficients were determined using the data from experimental research of many authors. The new system of equations computes the discharge more accurately than other authors' equations, with the error of approximately +/- 10% in full range of the measured data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10503 - Water resources

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Hydrology and Hydromechanics

ISSN

0042-790X

e-ISSN

1338-4333

Svazek periodika

67

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

10

Strana od-do

329-338

Kód UT WoS článku

000497193600005

EID výsledku v databázi Scopus

2-s2.0-85076282689