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Partager le résultat de cette recherche Interroger des sources externesEtude de l'aérodynamique dans un cyclone à l'aide du logiciel fluent. Application aux cyclones de la cimenterie de Hamma Bouziane / Nabil Kharoua
Titre : Etude de l'aérodynamique dans un cyclone à l'aide du logiciel fluent. Application aux cyclones de la cimenterie de Hamma Bouziane Type de document : texte imprimé Auteurs : Nabil Kharoua ; Univ. de Constantine, Éditeur scientifique ; Z Nemouchi, Directeur de thèse Année de publication : 2004 Importance : 74 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : Turbulence FLUENT Cyclone Efficacité de filtration Trajectoire de particule Index. décimale : 620 Génie Mécanique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=730 Etude de l'aérodynamique dans un cyclone à l'aide du logiciel fluent. Application aux cyclones de la cimenterie de Hamma Bouziane [texte imprimé] / Nabil Kharoua ; Univ. de Constantine, Éditeur scientifique ; Z Nemouchi, Directeur de thèse . - 2004 . - 74 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : Turbulence FLUENT Cyclone Efficacité de filtration Trajectoire de particule Index. décimale : 620 Génie Mécanique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=730 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KHA/4159 KHA/4159 Thèse Bibliothèque principale Thèses Disponible
Titre : Optimisation des echangeurs compacts application du logiciel fluent Type de document : texte imprimé Auteurs : Nada Benayad, Auteur ; N. Bellel, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2015 Importance : 150 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : échangeur coaxial Fluent modèles de turbulences écoulement tridimensionnel turbulence transfert thermique coaxial exchanger turbulence models three-dimensional flow heat transfer مبادل المحوري نماذج الاضطراب تدفق ثلاثي الأبعاد الاضطراب نقل الحرارة Index. décimale : 530 Physique Résumé : Experimental and numerical simulation studies of a three-dimensional turbulent flow of water in a coaxial exchanger are presented. The heat exchanger was divided into three equal sections to allow examination of the intermediate stream temperatures using thermocouples that capture the current temperatures of the four stations and the wall temperatures in the inlet and Release. Exchanger water / water heat turbulent flow. H 951 was designed to obtain quantitative results on the coefficients of heat transfer surface and global exchanger concentric tubes in turbulent flow. This compact unit designed to be installed on a table establishes, inter alia, the relationship between the Nusselt number, Reynolds and Prandtl, and
the comparison of results in parallel flow or against the current. The second part of the study was done by numerical simulation; we tested the mathematical model k − ε using finite volume in healthy fluent software. This work contributes greatly to the understanding of turbulent flows in a coaxial heat exchanger, and also shows the effect of physical parameters (temperature, diameter, flow rate) on the establishment of the turbulent flow in a coaxial heat exchanger.
The results obtained in this dynamics study of water in turbulent flow by the experimental and numerical study components are in good agreement and correspond to the results given in the literature (J.castaing-Lasvignottes). It has been found that the turbulent compact coaxial exchanger has a good configuration as it gives significant power exchange for surfaces too small. Flow phenomena of interest were observed. One can quote for example: The effect of various parameters (temperature, speed, and diameter) on the establishment of turbulent flow, the effect of the turbulence in the flow and in particular the behavior of the axial and tangential velocity fluctuations in this configuration exchanger has been shown numerically
Diplôme : Doctorat en sciences En ligne : ../theses/physique/BEN6818.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10088 Optimisation des echangeurs compacts application du logiciel fluent [texte imprimé] / Nada Benayad, Auteur ; N. Bellel, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2015 . - 150 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : échangeur coaxial Fluent modèles de turbulences écoulement tridimensionnel turbulence transfert thermique coaxial exchanger turbulence models three-dimensional flow heat transfer مبادل المحوري نماذج الاضطراب تدفق ثلاثي الأبعاد الاضطراب نقل الحرارة Index. décimale : 530 Physique Résumé : Experimental and numerical simulation studies of a three-dimensional turbulent flow of water in a coaxial exchanger are presented. The heat exchanger was divided into three equal sections to allow examination of the intermediate stream temperatures using thermocouples that capture the current temperatures of the four stations and the wall temperatures in the inlet and Release. Exchanger water / water heat turbulent flow. H 951 was designed to obtain quantitative results on the coefficients of heat transfer surface and global exchanger concentric tubes in turbulent flow. This compact unit designed to be installed on a table establishes, inter alia, the relationship between the Nusselt number, Reynolds and Prandtl, and
the comparison of results in parallel flow or against the current. The second part of the study was done by numerical simulation; we tested the mathematical model k − ε using finite volume in healthy fluent software. This work contributes greatly to the understanding of turbulent flows in a coaxial heat exchanger, and also shows the effect of physical parameters (temperature, diameter, flow rate) on the establishment of the turbulent flow in a coaxial heat exchanger.
The results obtained in this dynamics study of water in turbulent flow by the experimental and numerical study components are in good agreement and correspond to the results given in the literature (J.castaing-Lasvignottes). It has been found that the turbulent compact coaxial exchanger has a good configuration as it gives significant power exchange for surfaces too small. Flow phenomena of interest were observed. One can quote for example: The effect of various parameters (temperature, speed, and diameter) on the establishment of turbulent flow, the effect of the turbulence in the flow and in particular the behavior of the axial and tangential velocity fluctuations in this configuration exchanger has been shown numerically
Diplôme : Doctorat en sciences En ligne : ../theses/physique/BEN6818.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10088 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/6818 BEN/6818 Thèse Bibliothèque principale Thèses Disponible 
Titre : Etude numérique du transfert de chaleur en 2D et 3D dans une centrale à cheminée solaire et amélioration des performances. Type de document : texte imprimé Auteurs : Samir Djimli, Auteur ; Abla Chaker, Directeur de thèse Mention d'édition : 17/11/2020 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2020 Importance : 134 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : physique: Physique Energétique Energies renouvelables Cheminée solaire Fluent Tridimensionnelle (3D) Turbine à gaz Renewable Energies Solar chimney Three-dimensional (3D) Gas Turbine الطاقة المتجددة مدخنة الطاقة الشمسیة Fluentثلاثي الأبعاد التوربین الغازیة Index. décimale : 530 Physique Résumé :
The solar chimney is a generator of electrical power from solar energy, based on the conversion of the kinetic energy generated by natural convection into mechanical energy. However, the efficiency of this recent technique remains low compared to other processes. In order to increase the productivity of this system, our study has examined two essential techniques that have a direct impact on the performance, the first concerns the improvement of heat transfer which is an important factor to optimize the design of the chimney solar energy and the second is related to the combination of solar energy with other systems. In order to show the effect of heat transfer, two geometrical configurations of the solar chimney were considered. A two-dimensional, dimensionless numerical study with Fluent software, as a function of Rayleigh number and for both laminar and turbulent flow regimes, was undertaken. The possibility of combining a solar chimney with a gas turbine was studied. The injection of the exhaust gas at the inlet or in the middle of the collector was examined. In addition, a three-dimensional study was conducted to show the influence of the third direction on the flow and heat transfer in both laminar and turbulent regimes. The results obtained show that the position of the wind turbine in the geometrical configuration studied has an effect on the two velocity profiles at the outlet of the collector and at the inlet of the chimney. Moreover, it is clear that the coupling of the solar chimney with a gas turbine contributes to significantly improving the efficiency. The effect of the third direction was found in purely convective regimes.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/DJI7680.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11514 Etude numérique du transfert de chaleur en 2D et 3D dans une centrale à cheminée solaire et amélioration des performances. [texte imprimé] / Samir Djimli, Auteur ; Abla Chaker, Directeur de thèse . - 17/11/2020 . - جامعة الإخوة منتوري قسنطينة, 2020 . - 134 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : physique: Physique Energétique Energies renouvelables Cheminée solaire Fluent Tridimensionnelle (3D) Turbine à gaz Renewable Energies Solar chimney Three-dimensional (3D) Gas Turbine الطاقة المتجددة مدخنة الطاقة الشمسیة Fluentثلاثي الأبعاد التوربین الغازیة Index. décimale : 530 Physique Résumé :
The solar chimney is a generator of electrical power from solar energy, based on the conversion of the kinetic energy generated by natural convection into mechanical energy. However, the efficiency of this recent technique remains low compared to other processes. In order to increase the productivity of this system, our study has examined two essential techniques that have a direct impact on the performance, the first concerns the improvement of heat transfer which is an important factor to optimize the design of the chimney solar energy and the second is related to the combination of solar energy with other systems. In order to show the effect of heat transfer, two geometrical configurations of the solar chimney were considered. A two-dimensional, dimensionless numerical study with Fluent software, as a function of Rayleigh number and for both laminar and turbulent flow regimes, was undertaken. The possibility of combining a solar chimney with a gas turbine was studied. The injection of the exhaust gas at the inlet or in the middle of the collector was examined. In addition, a three-dimensional study was conducted to show the influence of the third direction on the flow and heat transfer in both laminar and turbulent regimes. The results obtained show that the position of the wind turbine in the geometrical configuration studied has an effect on the two velocity profiles at the outlet of the collector and at the inlet of the chimney. Moreover, it is clear that the coupling of the solar chimney with a gas turbine contributes to significantly improving the efficiency. The effect of the third direction was found in purely convective regimes.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/DJI7680.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11514 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité DJI/7680 DJI/7680 Thèse Bibliothèque principale Thèses Disponible
Titre : Comparaison des différents modèles de turbulence d'un écoulement aérodynamique dans un cyclone Type de document : texte imprimé Auteurs : Abderrahim Zeghib, Auteur ; Kamel Talbi, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2007 Importance : 78 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : Thermo-fluides Turbulence FLUENT Cyclone Effet du cone Aérodynamique effect of the cone turbulence aerodynamics Index. décimale : 620 Génie Mécanique Résumé : The cyclone is a two-phase device for the separation of the particles. It is usually employed in the field of the industrial applications. The Fluent code envisages very well the physical phenomena of the cyclone. The numerical study of aerodynamics was based on three cyclones with various lower diameters of the cone of the cyclone with various inlet velocities. Three digital models were compared to know RNG K-ε, k-ε and the RSM (Reynolds stress model). The three-dimensional nature of the flow was confirmed. The fall of pressure increases with the increase speeds of entry for all the studied models of turbulence. The fall decreases with the increase in the report/ratio of the diameter of the cone and the best choice it is cyclone 1. The validation of the results highlighted the advantage of the model of the stresses of Reynolds. This model collects better the phenomena in an intense turbulent flow in the presence of the walls. Diplôme : Magistère En ligne : ../theses/gmecanique/ZEG4852.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=675 Comparaison des différents modèles de turbulence d'un écoulement aérodynamique dans un cyclone [texte imprimé] / Abderrahim Zeghib, Auteur ; Kamel Talbi, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2007 . - 78 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : Thermo-fluides Turbulence FLUENT Cyclone Effet du cone Aérodynamique effect of the cone turbulence aerodynamics Index. décimale : 620 Génie Mécanique Résumé : The cyclone is a two-phase device for the separation of the particles. It is usually employed in the field of the industrial applications. The Fluent code envisages very well the physical phenomena of the cyclone. The numerical study of aerodynamics was based on three cyclones with various lower diameters of the cone of the cyclone with various inlet velocities. Three digital models were compared to know RNG K-ε, k-ε and the RSM (Reynolds stress model). The three-dimensional nature of the flow was confirmed. The fall of pressure increases with the increase speeds of entry for all the studied models of turbulence. The fall decreases with the increase in the report/ratio of the diameter of the cone and the best choice it is cyclone 1. The validation of the results highlighted the advantage of the model of the stresses of Reynolds. This model collects better the phenomena in an intense turbulent flow in the presence of the walls. Diplôme : Magistère En ligne : ../theses/gmecanique/ZEG4852.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=675 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ZEG/4852 ZEG/4852 Thèse Bibliothèque principale Thèses Disponible
Titre : simulation des effets thermiques et hydromecaniques d’une turbine installee dans une cheminee solaire. Type de document : texte imprimé Auteurs : Rayan Rabehi, Auteur ; Abla Chaker, Auteur Mention d'édition : 29/09/2021 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 136 f. Format : 30 cm. Note générale : Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : physique: Energies Renouvelables Cheminée solaire Simulation numérique en 2D et en 3D Turbine réelle Modèle de ventilateur Fluent Effets thermiques et hydromécaniques solar chimney 2D and 3D numerical simulation real turbine fan model thermal and hydromechanical effects مدخنة شمسية لزاكاة ثنائية الأبعاد وثلاثية الأبعاد توربين حقيقي نموذج الدروحة التأثيرات
الحرارية والذيدروميكانيكيةIndex. décimale : 530 Physique Résumé :
The objective of this workis to simulate numerically the main thermal and hydrodynamic phenomena in a solar chimney with particular attention to the turbine. This study was conducted using ANSYS FLUENT and FLUENT software to simulate the two-dimensional and three-dimensional models of a solar chimney power plant system, with and without a turbine. The simulation was performed for the geometry of prototype of Manzanares, Spain. Our numerical results are compared and validated with experimental and numerical work published. First, a numerical study of a solar chimney is conducted in order to highlight the characteristics of the system and to define the region where the speed of the flow canturn a turbine. We examined the effect air velocity at the collector inlet, and ambient temperature on the system. The temperature, velocity and pressure distributions in the system are analyzed. In order to find the best site to install a solar chimney in Algeria, oven areas are Chosen (Adrar, Tamanrasset, Ouargla and Constantine). The electrical power produced annually and monthly by the solar chimney for the four regions is estimated. In a second step, a numerical simulation in 3D of a solar chimney coupled with turbine was under taken. The turbine has been treated in two ways, either by adopting the fan model, or by coupling the solar chimney with a real turbine of four blades. In the first case, the detailed configuration of the turbine is not taken in to account, it has been treated as an infinitely thin disk. The effect of solar radiation and the pressure drop across the turbine on elements such as the temperature difference in the collector, the efficiency of the collector and the power of the system, is studied. In the second case, the influence of the rotation speed of the turbine on the velocity and the temperature of the flow at the exit of the chimney is examined. The electric power output and the efficiency of the turbine were also estimated.
Note de contenu : Annexes. Diplôme : Doctorat En ligne : ../theses/physique/RAB7815.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11648 simulation des effets thermiques et hydromecaniques d’une turbine installee dans une cheminee solaire. [texte imprimé] / Rayan Rabehi, Auteur ; Abla Chaker, Auteur . - 29/09/2021 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 136 f. ; 30 cm.
Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : physique: Energies Renouvelables Cheminée solaire Simulation numérique en 2D et en 3D Turbine réelle Modèle de ventilateur Fluent Effets thermiques et hydromécaniques solar chimney 2D and 3D numerical simulation real turbine fan model thermal and hydromechanical effects مدخنة شمسية لزاكاة ثنائية الأبعاد وثلاثية الأبعاد توربين حقيقي نموذج الدروحة التأثيرات
الحرارية والذيدروميكانيكيةIndex. décimale : 530 Physique Résumé :
The objective of this workis to simulate numerically the main thermal and hydrodynamic phenomena in a solar chimney with particular attention to the turbine. This study was conducted using ANSYS FLUENT and FLUENT software to simulate the two-dimensional and three-dimensional models of a solar chimney power plant system, with and without a turbine. The simulation was performed for the geometry of prototype of Manzanares, Spain. Our numerical results are compared and validated with experimental and numerical work published. First, a numerical study of a solar chimney is conducted in order to highlight the characteristics of the system and to define the region where the speed of the flow canturn a turbine. We examined the effect air velocity at the collector inlet, and ambient temperature on the system. The temperature, velocity and pressure distributions in the system are analyzed. In order to find the best site to install a solar chimney in Algeria, oven areas are Chosen (Adrar, Tamanrasset, Ouargla and Constantine). The electrical power produced annually and monthly by the solar chimney for the four regions is estimated. In a second step, a numerical simulation in 3D of a solar chimney coupled with turbine was under taken. The turbine has been treated in two ways, either by adopting the fan model, or by coupling the solar chimney with a real turbine of four blades. In the first case, the detailed configuration of the turbine is not taken in to account, it has been treated as an infinitely thin disk. The effect of solar radiation and the pressure drop across the turbine on elements such as the temperature difference in the collector, the efficiency of the collector and the power of the system, is studied. In the second case, the influence of the rotation speed of the turbine on the velocity and the temperature of the flow at the exit of the chimney is examined. The electric power output and the efficiency of the turbine were also estimated.
Note de contenu : Annexes. Diplôme : Doctorat En ligne : ../theses/physique/RAB7815.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11648 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité RAB/7815 RAB/7815 Thèse Bibliothèque principale Thèses Disponible
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