http://localhost:8080/xmlui/handle/123456789/49 2026-04-13T15:27:53Z 2026-04-13T15:27:53Z Haddad, Ali http://localhost:8080/xmlui/handle/123456789/144 2023-02-21T09:01:19Z 2009-01-01T00:00:00Z

Titre: Contribution a la modélisation de l'onde de rupture d'un barrage envase. Auteur(s): Haddad, Ali Résumé: Propagation simulation of the dambreak wave constitutes a significant factor in the dam break risks study under seism effect. For a precise analysis of the phenomenon, we must hold account the effect of the mud contained in the reserve which can, during the failure, being mobilized quasi instantaneously and transported towards the downstream of the dam. In this study, a numerical modelling of dambreak wave of silted dam is carried out. The model treats, in the upstream of the dam, the flow and the erosion of sediments contained in reserve. In the downstream, it treats the wave propagation and the transport of the sediments in the valley. The results of simulation are exploited to work out the cartography of vulnerable zones to the flood, and sediment zones of the mud transported.; Propagation simulation of the dambreak wave constitutes a significant factor in the dam break risks study under seism effect. For a precise analysis of the phenomenon, we must hold account the effect of the mud contained in the reserve which can, during the failure, being mobilized quasi instantaneously and transported towards the downstream of the dam. In this study, a numerical modelling of dambreak wave of silted dam is carried out. The model treats, in the upstream of the dam, the flow and the erosion of sediments contained in reserve. In the downstream, it treats the wave propagation and the transport of the sediments in the valley. The results of simulation are exploited to work out the cartography of vulnerable zones to the flood, and sediment zones of the mud transported.

2009-01-01T00:00:00Z Zeroual, Ayoub http://localhost:8080/xmlui/handle/123456789/143 2023-02-21T09:01:43Z 2009-01-01T00:00:00Z

Titre: Contribution à la modélisation des courbes de Tarage (cas de bassin versant côtier Algérois. Auteur(s): Zeroual, Ayoub Résumé: The objective of this study is to develop effective models for estimating the discharge, of the flows in the rivers of the Algerian Coastal basin, where an accentuated space-time variability of the liquid flows is observed. The work aims to define all the parameters, geomorphologic, geologic, hydrological and climatically of the Algerian Coastal under basins, followed by a quantitative and qualitative analysis of the liquid discharge and wetted cross section, liquid discharge and stage measured on the level of the hydrometric stations. This has allowed to the identification of "discharge-cross section" and "discharge-stage" models for the extrapolation of the great discharges in the absence of gauging for the rivers of the Algerian coastal basin. The application of the entropy method leads quickly to the floods discharges estimation, without doing a full gauging. Taking into account the loose density of the gauging network in the Algerian Coastal basin, a methodological approach is developed to estimate the rating curve according to the perspective of the watershed characteristics. It is based on the linear multiple regression and the artificial neural network concept .

2009-01-01T00:00:00Z Ratiat, Abdelkader http://localhost:8080/xmlui/handle/123456789/141 2023-02-21T09:02:58Z 2010-01-01T00:00:00Z

Titre: Etude des infiltrations dans les barrages : cas du barrage de Beni Haroun (w. Mila ) Auteur(s): Ratiat, Abdelkader

2010-01-01T00:00:00Z Bourkia, Mohammed http://localhost:8080/xmlui/handle/123456789/139 2023-02-21T09:03:51Z 2011-01-01T00:00:00Z

Titre: Etude de l'effet de cavitation sur les roues de différents types de matériaux des pompes de POVAL. Auteur(s): Bourkia, Mohammed Résumé: Indeed, work that planned us to carry out in this memory proposes to study the phenomenon of cavitation in the radial centrifugal pumps. With this intention, we took the pump (40 NVA) as an example in the first time; a general theoretical study has inculs the various characteristics of the pump, and the phenomenon of cavitation in addition, and at the time of the practical part, we tried to apply this phenomenon on the pump (200 hours for each type of materials in fact, bronze, aluminum and cast iron). This experiment will be based primarily on these three types of metals which are used in the manufacturing of wheel. And this for the study of resistibility of each material.

2011-01-01T00:00:00Z