http://archives.univ-biskra.dz/handle/123456789/5410 2026-04-06T11:24:55Z http://archives.univ-biskra.dz/handle/123456789/5429 Titre: CONTRIBUTION A L’ETUDE NUMERIQUE DE L’ECOULEMENT SUBSONIQUE ET TRANSSONIQUE AUTOUR D’UN PROFIL D’AILE MINCE TYPE NACA 0006 Auteur(s): BOUHELAL A; BRIMA A.; DERFOUF C.E; MOUMMI N Résumé: The works allows to studying theoretically (numerical method + solver Fluent) the flow around the profile. Our attention will be principally takes on the description of the parallel and homogeneous flow. In the same context and in the case of the potential flow, we will take the perturbed function φ caused by the presence of the profile. The mathematical formulation of the problem gives for different Mach number several forms of differential equations as (linear or non linear). The solution found for each Mach number interval allows a good understanding of the flow behaviors inside the studies field 2015-03-02T00:00:00Z http://archives.univ-biskra.dz/handle/123456789/5428 Titre: ORGANIC POLLUTION INDICATION AS TRACER FOR THE POLLUTION OF DEEP BORING WATER: THE EXAMPLE OF THE TOWNSHIP OF ABOMEY-CALAVI (BENIN) Auteur(s): HOUNSINOU S.P; MAMA D; SOHOUNHLOUE D.; BOUKARI M Résumé: Pollution represents a serious problem for the environment; the worn-out waters domesticated and non-purified represent the main source of organic pollution of waters. The township of Abomey-Calavi is between the latitudes 6°20'23.4 '' and 6°42'6.6 '' North and the longitudes 2°14'13.8 ''and 2°25'7.8 '' East. Followed it of analysis in the different points of observation made the object of a treatment of data by the establishment of a card of organic pollution of 54 deep boring waters and 4 surface water of the region, that informs us on the influence of the dismissals and the quality of waters by the slant of an organic pollution indication that himself calculation according to the method of Leclercq, Maquet (1987) whose principle is to distribute the values of the polluting elements in 05 classes, to determine from his own measures, the number class correspondent for every parameter to make the average of it. The interpretation of the card representing the different parameters of organic pollution of the 54 deep boring water and 4 surface water gives some results on the contamination or not of the natural waters. The card shows that the different deep boring water in the region of Abomey-Calavi pass from a quality to another 2015-03-02T00:00:00Z http://archives.univ-biskra.dz/handle/123456789/5427 Titre: EFFECT OF SOME EXTERNAL PARAMETERS ON FRESH WATER QUALITY AND PRODUCTION BY SOLAR WATER DISTILLATION Auteur(s): ZIOUI D; BELLATRECHE R; TIGRINE Z; ABURIDEH H Résumé: In Algeria, as in developing countries, the problem of drinking water is becoming increasingly important, due to the population growth and rising living standards. Desalination of seawater and brackish water is now possible to meet the demand for potable water. Among the various methods, solar distillation is an attractive solution for isolated and remote area. The main objective of the present work is the study of a plan solar still with greenhouse effect. We have especially worked on the determination of operating characteristics, production and other parameters. The performed work is purely experimental and is part within the framework of improving the profitability of a solar still with greenhouse effect. During this period of experimentation, different parameters have been mainly a series of measurements: solar radiation, the temperatures of different parts of the setup (internal pane of glass, internal air, water in the tank...) and the daily production. The obtained results have allowed us to determine the external and internal parameters influence on the still yield. 2015-03-02T00:00:00Z http://archives.univ-biskra.dz/handle/123456789/5426 Titre: L’EAU SOUTERRAINE DANS LES TUNNELS DU TGV DANS DES AQUIFÈRES KARSTIQUES. UN EXEMPLE ESPAGNOL Auteur(s): PULIDO BOSCH A; SOLA F. Résumé: dépendent souvent de la présence ou de l’absence d’eau dans les formations traversées, au point de conditionner leur tracé définitif et, parfois, de produire un impact difficile à atténuer. En raison de l’exécution du train à grande vitesse en Andalousie, le tunnel d’Archidona, d’à peine un kilomètre de longueur, traverse des marno-calcaires, des calcaires et des dolomies, des argiles, de grands blocs et des matériaux sableux, avec quelques tronçons au-dessous du niveau piézométrique. Dans cette communication nous décrivons le tunnel dans la phase de projet, les modifications quant au projet original, afin d’éviter la présence d’eau, et la répercussion sur les usages de celle-ci sur l’environnement. Nous analysons également les forages de recherche réalisés, les suivis, et les réponses des systèmes aux événements pluvieux à grande intensité, qui ont modifié considérablement les conditions hydrogéologiques initiales. L’existence de formes karstiques et de fractures transmissives conditionne les débits drainés par le tunnel suite aux événements pluvieux. Les observations réalisées permettent de quantifier le temps de réponse à ces événements. Ce tunnel est déjà terminé. 2015-03-02T00:00:00Z