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جامعة عمّار ثليجي – الأغواط

Université Amar Telidji de Laghouat

Archive ouverte de la recherche, des thèses et des cours pédagogiques
الأرشيف المفتوح للبحوث والمذكرات والدروس

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Faculty of Civil Engineering And Architecture
كلية الهندسة المدنية والمعمارية
Faculty of Economic And Commercial Sciences And Management Sciences
كلية العلوم الاقتصادية والتجارية وعلوم التسيير
Faculty of Human Sciences And Islamic Sciences And Civilizations
كلية العلوم الإنسانية و العلوم الإسلامية والحضارة
Faculty of Law And Political Science
كلية الحقوق والعلوم السياسية
Faculty of Letters And Languages
كلية الآداب و اللغات

Recent Submissions

Évaluation des performances thermiques et modélisation de l'encrassement d'un échangeur à faisceau et calandre
(Université Amar Thelidji- Laghouat FACULTE : TECHNOLOGIE DEPARTEMENT : GÉNIE DES PROCÉDÉS, 2026) Oumar Kacheif Bilal; MERIGUI Khaled
In the oil companies the heat exchanger is an essential element for the control of energy, the problems related to thermohydraulics concern first of all the thermal dimensioning reduced because of clogging of the tubes. For this purpose, this work will numerically study the dynamic and thermal behavior of a flow of two fluids to improve the performance of these equipments in the case of a tube bundle heat exchanger, and comparison of the results obtained between the design case and the current case (after revision), to have the difference between these two cases, and to see the clear improvement in performance in the heat exchangers
Contribution à l'optimisation de la planification intelligente de la charge dans un réseau électrique
(Université Amar Telidji- Laghouat Faculté de Technologie Département d’Electrotechnique, 2026) NOUACER Aya; Saliha CHETTIH
In this dissertation, an approach based on Long Short-Term Memory (LSTM) recurrent neural networks was developed for the long-term forecasting of the electrical load of the 60/30 kV Guerrara substation, operated by the Ghardaïa Distribution Directorate (SONELGAZ). A chronological database covering a period of 21 years was established using historical apparent power data from the IEEE 33-Bus network and enriched with representative synthetic load data to reproduce the evolution of electricity demand over a long-term horizon. The data were preprocessed, normalized, and organized as time series to enable effective training of the proposed model. The obtained results demonstrated the ability of the LSTM model to capture temporal dependencies and nonlinear characteristics of electrical load data. The use of synthetic load data consistent with demand growth trends improved the representativeness of the training dataset and enabled more realistic simulations. The forecasting results for the real case of the Guerrara substation showed good agreement with reference values and highlighted a progressive increase in electrical load over a 15-year forecasting horizon. Furthermore, the complementary application carried out on the IEEE 33- Bus network successfully evaluated the performance of the model over a more extended time horizon.
Etude d'un échangeur géothermique (Refroidissement par évaporation)
(Université Amar Thelidji- Laghouat FACULTE: Technologie DEPARTEMENT : Génie- mécanique, 2026) TICHOUCHE NOUSSAIBA IHSSANE; MOHAMED BELHADJ
This study presents an experimental investigation of the thermal performance of a copper coil heat exchanger buried in moist soil. The main objective is to evaluate the influence of soil moisture content and water flow rate on heat transfer and to improve the cooling process through evaporative cooling. The experimental setup consists of a copper coil buried at a depth of 30 cm in a container filled with moist soil. Hot water at approximately 50°C circulates through the coil at three different flow rates (8, 16, and 18 ml/s). The inlet and outlet water temperatures, soil and ambient temperatures, as well as soil moisture, were measured every 30 minutes over a total experimental period of three hours. The results showed that the flow rate of 8 ml/s provided the best cooling performance due to the longer residence time of the water inside the coil, whereas the flow rate of 18 ml/s enabled the transfer of the highest amount of thermal energy. The system performance gradually decreased over time because of the reduction in soil moisture and the weakening of the evaporative cooling effect. These findings demonstrate that a heat exchanger buried in moist soil represents a simple and cost-effective solution for enhancing heat transfer in shallow geothermal applications.
Conception et simulation numérique d'un capteur ultrasonique à l'aide d’un montage Arduino et modélisation des données via Python
(Université Amar Thelidji- Laghouat FACULTE : Technologie DEPARTEMENT : Electronique, 2026) Lahoual Ossama; Abdelhafid Mouhoub
This work presents the design of an ultrasonic sensor based on the HC-SR04 module combined with Arduino for distance measurement and obstacle detection. The experiments validated a measured speed of sound close to 343 m/s at 20°C, with good measurement accuracy over a range of 10 to 200 cm. The obstacle detector effectively triggers a light and sound alarm when the distance falls below 10 cm. The Python interface, through serial communication, enables dynamic visualization of the data (distance, time of flight, and speed). The results confirm the robustness of the setup while highlighting the limitations of the HC-SR04 sensor (sensitivity to temperature and angle of incidence). This project successfully combines electronics, programming, and data processing.
ÉLABORATION DE PHOTOCATALYSEUR A BASE DE TUNGSTATE DE CUIVRE (CuWO4). APPLICATION A LA PHOTODÉGRADATION DU BLEU DE MÉTHYLÈNE EN MILIEU AQUEUX.
(Université Amar Thelidji- Laghouat FACULTÉ : TECHNOLOGIE DÉPARTEMENT : GÉNIE DES PROCÉDÉS, 2026) FECHKEUR Hana Ines; MATALLAH Isra; TAOUTI Mohamed Benabdallah
The main objective of this study is the synthesis and characterization of copper tungstate (CuWO₄), as well as the evaluation of its photocatalytic properties toward the degradation of methylene blue.The CuWO₄ compound was prepared using a simple and cost-effective method known as soft chemistry.Fourier Transform Infrared (FTIR) spectroscopy analysis enabled the identification of the characteristic chemical bonds, corresponding to the deformation of O–W–O bonds and the stretching vibrations of Cu–O bonds.Structural analyses carried out using X-ray diffraction (XRD) allowed for precise identification of the formed crystalline phases. The crystallite sizes estimated using the Debye–Scherrer equation revealed the nanometric nature of CuWO₄, with an average size of about 42 nm.In the presence of this photocatalyst, the degradation rate of methylene blue can reach up to 86%, following a first-order reaction kinetics.