Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)

This paper proposes a new design for the shaft spillway of the Djedra dam (East Algeria). The procedure consists of replacing the circular section with a polygonal configuration of twelve (12) sections. The study of the model was divided into five different versions according to the variants of tech...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kahlerras Djillali, Brakeni Abderrezak, Gouryev Alim Petrovic, Beglarova Evelina Sourenevna
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	discharge capacity djedra dam flow coefficient polygonal section shaft spillway Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/0f09ea40cf2e48a6be968fd3f9f1e86f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:0f09ea40cf2e48a6be968fd3f9f1e86f
record_format	dspace
spelling	oai:doaj.org-article:0f09ea40cf2e48a6be968fd3f9f1e86f2021-11-06T07:12:40ZDischarge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)1606-97491607-079810.2166/ws.2020.366https://doaj.org/article/0f09ea40cf2e48a6be968fd3f9f1e86f2021-05-01T00:00:00Zhttp://ws.iwaponline.com/content/21/3/1202https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798This paper proposes a new design for the shaft spillway of the Djedra dam (East Algeria). The procedure consists of replacing the circular section with a polygonal configuration of twelve (12) sections. The study of the model was divided into five different versions according to the variants of technical modifications of the water intake funnel; this configuration was tested on a hydraulic model in the laboratory of hydroelectric power plants of the Moscow State University of Environmental Engineering. The use of the polygonal section weir can greatly simplify the formwork of the structure, also the free entry funnel increases the discharge coefficient by 20%, without exposing the head of the weir to the risk of cavitation. In the event of submersion, the adopted design can ensure the crossing of an estimated relative flow with a probability of P = 0.01%, which means reducing the height of the dam by 0.68 m, and thus making the hydraulic structure more efficient economically and more reliable. The experimental model was produced on a 1:60 scale of the prototype, which guarantees self-simulation of the hydraulic phenomena of the Djedra dam, and its final design is judged to be hydraulically satisfactory and recommended for construction. HIGHLIGHTS A new design of the weir of the dam is a polygonal configuration.; The polygonal section weir simplifies its structure.; The free entry weir funnel increases the discharge coefficient by 20%.; In the event of submersion, the weir provides an estimated flow rate of P = 0.01%.; The experimental model produced on a scale of 1:60 of the prototype guarantees self-simulation of the hydraulic phenomena of the dam.;Kahlerras DjillaliBrakeni AbderrezakGouryev Alim PetrovicBeglarova Evelina SourenevnaIWA Publishingarticledischarge capacitydjedra damflow coefficientpolygonal sectionshaft spillwayWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 3, Pp 1202-1215 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	discharge capacity djedra dam flow coefficient polygonal section shaft spillway Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	discharge capacity djedra dam flow coefficient polygonal section shaft spillway Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Kahlerras Djillali Brakeni Abderrezak Gouryev Alim Petrovic Beglarova Evelina Sourenevna Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)
description	This paper proposes a new design for the shaft spillway of the Djedra dam (East Algeria). The procedure consists of replacing the circular section with a polygonal configuration of twelve (12) sections. The study of the model was divided into five different versions according to the variants of technical modifications of the water intake funnel; this configuration was tested on a hydraulic model in the laboratory of hydroelectric power plants of the Moscow State University of Environmental Engineering. The use of the polygonal section weir can greatly simplify the formwork of the structure, also the free entry funnel increases the discharge coefficient by 20%, without exposing the head of the weir to the risk of cavitation. In the event of submersion, the adopted design can ensure the crossing of an estimated relative flow with a probability of P = 0.01%, which means reducing the height of the dam by 0.68 m, and thus making the hydraulic structure more efficient economically and more reliable. The experimental model was produced on a 1:60 scale of the prototype, which guarantees self-simulation of the hydraulic phenomena of the Djedra dam, and its final design is judged to be hydraulically satisfactory and recommended for construction. HIGHLIGHTS A new design of the weir of the dam is a polygonal configuration.; The polygonal section weir simplifies its structure.; The free entry weir funnel increases the discharge coefficient by 20%.; In the event of submersion, the weir provides an estimated flow rate of P = 0.01%.; The experimental model produced on a scale of 1:60 of the prototype guarantees self-simulation of the hydraulic phenomena of the dam.;
format	article
author	Kahlerras Djillali Brakeni Abderrezak Gouryev Alim Petrovic Beglarova Evelina Sourenevna
author_facet	Kahlerras Djillali Brakeni Abderrezak Gouryev Alim Petrovic Beglarova Evelina Sourenevna
author_sort	Kahlerras Djillali
title	Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)
title_short	Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)
title_full	Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)
title_fullStr	Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)
title_full_unstemmed	Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)
title_sort	discharge capacity of shaft spillway with a polygonal section: a case study of djedra dam (east algeria)
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/0f09ea40cf2e48a6be968fd3f9f1e86f
work_keys_str_mv	AT kahlerrasdjillali dischargecapacityofshaftspillwaywithapolygonalsectionacasestudyofdjedradameastalgeria AT brakeniabderrezak dischargecapacityofshaftspillwaywithapolygonalsectionacasestudyofdjedradameastalgeria AT gouryevalimpetrovic dischargecapacityofshaftspillwaywithapolygonalsectionacasestudyofdjedradameastalgeria AT beglarovaevelinasourenevna dischargecapacityofshaftspillwaywithapolygonalsectionacasestudyofdjedradameastalgeria
_version_	1718443776144310272

Discharge capacity of shaft spillway with a polygonal section: a case study of Djedra dam (East Algeria)

Ejemplares similares