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Titre : Transferts thermiques dans un conduit cylindrique annulaire muni d'ailettes Type de document : texte imprimé Auteurs : Mohammed Benkhedda ; Université Mentouri, Editeur scientifique ; T. Boufendi, Directeur de thèse Année de publication : 2010 Importance : 117 f. Note générale : 01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD Langues : Français (fre) Tags : Ecoulement laminaire Convection mixte Convection forcée Ailettes Simulation numérique 3D Cylindres concentriques Index. décimale : 530 Physique En ligne : ../theses/physique/BEN5794.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3551 Transferts thermiques dans un conduit cylindrique annulaire muni d'ailettes [texte imprimé] / Mohammed Benkhedda ; Université Mentouri, Editeur scientifique ; T. Boufendi, Directeur de thèse . - 2010 . - 117 f.
01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Tags : Ecoulement laminaire Convection mixte Convection forcée Ailettes Simulation numérique 3D Cylindres concentriques Index. décimale : 530 Physique En ligne : ../theses/physique/BEN5794.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3551 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Optimisation et modelisation d’un distillateur solaire a ailettes avec stockage de chaleur / Nafila Smakdji
Titre : Optimisation et modelisation d’un distillateur solaire a ailettes avec stockage de chaleur Type de document : texte imprimé Auteurs : Nafila Smakdji, Auteur ; Abdenacer Kaabi, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2014 Importance : 137 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : stockage thermique énergie solaire eau saumâtre distillation solaire ailettes écart de température thermal storage solar energy brackish water Solar distillation fins temperature difference ????? ????? ???? ????? ????? ???? ????? ???? ???? ??????? Index. décimale : 626 Génie Climatique Résumé : To improve the efficiency of simple solar still greenhouse, several experimental work has been made, specifically, active solar still which is a simple solar still coupled with a solar collector where the brine distillation is preheated. To increase the amount of distilled water we studied an active solar still modified with a sensible heat storage tank. Our prototype consists of a simple solar still consisting of a metallic cover which acts as the condenser. A type 'tube' heat exchanger is installed inside the still to heat the brine, a good insulation has been planned at the level of the posterior part of the solar still . As the performance of it is strongly influenced by the temperature difference between brine and coverage of the solar still , with cooling fins are placed on the outside of the cover. Our study we are seeing a significant improvement in the daily production. Our present work is aimed to enrich existing data by mathematical modeling of our prototype based on appropriate heat balances and the use of heat and mass coefficients, with some simplifying assumptions. The purpose of numerical simulation is the optimization of the parameters that affect the production of distilled water, giving an order of magnitude of what thermal storage can make to the proper functioning of a simple solar still
Diplôme : Doctorat en sciences En ligne : ../theses/gclim/SMA6659.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9954 Optimisation et modelisation d’un distillateur solaire a ailettes avec stockage de chaleur [texte imprimé] / Nafila Smakdji, Auteur ; Abdenacer Kaabi, Directeur de thèse . - constantine (Route ain el bey, Algérie) : Université Constantine 1, 2014 . - 137 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : stockage thermique énergie solaire eau saumâtre distillation solaire ailettes écart de température thermal storage solar energy brackish water Solar distillation fins temperature difference ????? ????? ???? ????? ????? ???? ????? ???? ???? ??????? Index. décimale : 626 Génie Climatique Résumé : To improve the efficiency of simple solar still greenhouse, several experimental work has been made, specifically, active solar still which is a simple solar still coupled with a solar collector where the brine distillation is preheated. To increase the amount of distilled water we studied an active solar still modified with a sensible heat storage tank. Our prototype consists of a simple solar still consisting of a metallic cover which acts as the condenser. A type 'tube' heat exchanger is installed inside the still to heat the brine, a good insulation has been planned at the level of the posterior part of the solar still . As the performance of it is strongly influenced by the temperature difference between brine and coverage of the solar still , with cooling fins are placed on the outside of the cover. Our study we are seeing a significant improvement in the daily production. Our present work is aimed to enrich existing data by mathematical modeling of our prototype based on appropriate heat balances and the use of heat and mass coefficients, with some simplifying assumptions. The purpose of numerical simulation is the optimization of the parameters that affect the production of distilled water, giving an order of magnitude of what thermal storage can make to the proper functioning of a simple solar still
Diplôme : Doctorat en sciences En ligne : ../theses/gclim/SMA6659.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9954 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Étude Numérique de la Convection Mixte dans un Canal Horizontal Contenant des Ailettes Type de document : texte imprimé Auteurs : Moussa Khentoul, Auteur ; R. Bessaih, Auteur Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 131 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : Convection mixte Canal horizontal Refroidissement nanofluide Ailettes Mixed convection horizontal channel Cooling nanofluid fins ????? ??????? ???? ????? ????? ???? ??????? ???????? Index. décimale : 620 Génie Mécanique Résumé : Heat transfer is very important for good design and reliable operation of a system.
Reliability and system performance are highly dependent on the operating temperature,
in particular, in electronic equipment. Several cooling methods have been proposed in
order to improve the heat transfer. These techniques include two: which consists in
grafting blades offering a greater contact surface with the environment; and which
consists of using nanofluids comprising metallic particles or carbon nanotubes. The
latter is currently present the best solution.
In the first part of the thesis, a numerical study of 2D laminar mixed convection in
a horizontal channel with three fins nanofluid has been carried out made. The influence
of Reynolds and Richardson numbers and concentration of nanoparticles (Al2O3, Cu, Ag
and TiO2) dispersed in a base fluid (water), on the flow and thermal fields is presented.
A computer code in Fortran, based on finite volume method was used to simulate 2D
flow with heat transfer. The results indicate that the addition of nanoparticles in pure
water can improve the cooling performance, in particular, low Richardson number. The
influence of the solid volume fraction on increasing the heat transfer is more sensitive to
higher values of Reynolds number. Although, the addition of nanofluids (TiO2 and
Al
2O3) also increases heat transfer, their influence is not important for Cu-Ag-water and
water.
The second part is to find an optimal geometry for good cooling. Numerical
calculations were carried out using the software ""FLUENT 6.3"" to simulate 3D laminar
mixed convection flow in a channel containing fins with nanofluid. The effects of
Reynolds number, height, and distance between the fins are presented and discussed.
Diplôme : Doctorat En ligne : ../theses/gmecanique/KHE6947.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10324 Étude Numérique de la Convection Mixte dans un Canal Horizontal Contenant des Ailettes [texte imprimé] / Moussa Khentoul, Auteur ; R. Bessaih, Auteur . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 131 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : Convection mixte Canal horizontal Refroidissement nanofluide Ailettes Mixed convection horizontal channel Cooling nanofluid fins ????? ??????? ???? ????? ????? ???? ??????? ???????? Index. décimale : 620 Génie Mécanique Résumé : Heat transfer is very important for good design and reliable operation of a system.
Reliability and system performance are highly dependent on the operating temperature,
in particular, in electronic equipment. Several cooling methods have been proposed in
order to improve the heat transfer. These techniques include two: which consists in
grafting blades offering a greater contact surface with the environment; and which
consists of using nanofluids comprising metallic particles or carbon nanotubes. The
latter is currently present the best solution.
In the first part of the thesis, a numerical study of 2D laminar mixed convection in
a horizontal channel with three fins nanofluid has been carried out made. The influence
of Reynolds and Richardson numbers and concentration of nanoparticles (Al2O3, Cu, Ag
and TiO2) dispersed in a base fluid (water), on the flow and thermal fields is presented.
A computer code in Fortran, based on finite volume method was used to simulate 2D
flow with heat transfer. The results indicate that the addition of nanoparticles in pure
water can improve the cooling performance, in particular, low Richardson number. The
influence of the solid volume fraction on increasing the heat transfer is more sensitive to
higher values of Reynolds number. Although, the addition of nanofluids (TiO2 and
Al
2O3) also increases heat transfer, their influence is not important for Cu-Ag-water and
water.
The second part is to find an optimal geometry for good cooling. Numerical
calculations were carried out using the software ""FLUENT 6.3"" to simulate 3D laminar
mixed convection flow in a channel containing fins with nanofluid. The effects of
Reynolds number, height, and distance between the fins are presented and discussed.
Diplôme : Doctorat En ligne : ../theses/gmecanique/KHE6947.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10324 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : La Convection mixte dans un éspace annulaire entre deux cylindres cocentriques Type de document : texte imprimé Auteurs : Abdelkader Khaled Hariz ; Université Mentouri, Editeur scientifique ; T. Boufendi, Directeur de thèse Année de publication : 2008 Importance : 128 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Tags : Ecoulement laminaire Convection mixte Convection forcée Espace annulaire Cylindres cocentriques Ailettes Simulation numérique 3D Index. décimale : 530 Physique En ligne : ../theses/physique/HAR5058.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3463 La Convection mixte dans un éspace annulaire entre deux cylindres cocentriques [texte imprimé] / Abdelkader Khaled Hariz ; Université Mentouri, Editeur scientifique ; T. Boufendi, Directeur de thèse . - 2008 . - 128 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Tags : Ecoulement laminaire Convection mixte Convection forcée Espace annulaire Cylindres cocentriques Ailettes Simulation numérique 3D Index. décimale : 530 Physique En ligne : ../theses/physique/HAR5058.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3463 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
