Download or read book Contribution l tude des caract ristiques radiatives de gaz de combustion written by Fortino Paramo and published by . This book was released on 1980 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Notions générales. Origine physique et description quantitative. Modèles de bandes. Modèle à bande large. Calcul de l'émissivité chromatique des gaz et des mélanges. Etude experimentale

Download or read book CONTRIBUTION A L ETUDE DU RAYONNEMENT HAUTE TEMPERATURE DES GAZ DE COMBUSTION EN SITUATION DE COUCHE LIMITE written by Frédéric Grisch and published by . This book was released on 1988 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE EXPERIMENTALE ET THEORIQUE SUR LES PROPRIETES RADIATIVES DES MOLECULES DE CO::(2) ET H::(2)O A HAUTE TEMPERATURE. REALISATION D'UN DISPOSITIF EXPERIMENTAL CONSTITUE D'UN BRULEUR METHANE-OXYGENE ASSOCIE A UNE PLAQUE PLANE. DISCUSSION DE DIFFERENTS MODELES DE TRANSFERT RADIATIF

Download or read book Etude du spectre d mission infrarouge des gaz de combustion written by JOHANA.. VALLY and published by . This book was released on 1999 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE TRAITE LE PROBLEME DE LA DETERMINATION DE LA TEMPERATURE DE GAZ PAR DES METHODES NON INTRUSIVES. DES METHODES DE MESURES BASEES SUR L'ETUDE DU SPECTRE D'EMISSION INFRAROUGE DU GAZ SONT DEVELOPPEES. DEUX TYPES D'APPLICATION SONT TRAITEES : LA DETERMINATION DU PROFIL DE TEMPERATURE DANS UN GAZ D'ECHAPPEMENT (APPLICATION BASSE TEMPERATURE, PRESSION ATMOSPHERIQUE) ET LA DETERMINATION DE LA TEMPERATURE DANS UNE CHAMBRE DE COMBUSTION D'UNE TURBINE A GAZ (APPLICATION HAUTE TEMPERATURE, HAUTE PRESSION). LES PROFILS DE TEMPERATURE DANS LES GAZ D'ECHAPPEMENT SONT OBTENUS A PARTIR DES MESURES DU SPECTRE D'EMISSION DU CO 2 ENTRE 2380 CM 1 ET 2400 CM 1. CE DOMAINE SPECTRAL A ETE CHOISI CAR LE SPECTRE EST TRES SENSIBLE AUX EVOLUTIONS DU PROFIL DE TEMPERATURE. A PARTIR DE LA MODELISATION DU SPECTRE DANS CE DOMAINE, LA SENSIBILITE DE LA MESURE DE LUMINANCE A L'EVOLUTION DE LA TEMPERATURE EST QUANTIFIEE. LE COMPORTEMENT DES NOYAUX DE L'EQUATION DE TRANSFERT RADIATIF NOUS A, ENSUITE, PERMIS DE DETERMINER LE POIDS QUE POSSEDE CHAQUE COUCHE DE GAZ DANS LA MESURE DU SPECTRE. CETTE ETUDE DU PROBLEME DIRECT NOUS PERMET DE DEFINIR UNE METHODE D'INVERSION APPROPRIEE QUI EST BASEE SUR LA MINIMISATION PAR OPTIMISATION NON LINEAIRE D'UN CRITERE QUADRATIQUE. L'INCIDENCE DU BRUIT DE MESURE SUR LES PARAMETRES INVERSES A ETE ANALYSEE PAR UNE METHODE DE MONTE-CARLO. CES ETUDES NOUS ONT PERMIS DE DEFINIR UNE METHODE DE MESURE ET LES CARACTERISTIQUES D'UN CAPTEUR. UN APPAREILLAGE BASE SUR CES CARACTERISTIQUES A ETE DEVELOPPE. DES MESURES ONT ETE EFFECTUEES SUR UN TURBOREACTEUR AU DERA (DEFENCE RESEARCH AGENCY) ET ONT ETE COMPAREES AVEC DES MESURES INTRUSIVES EFFECTUEES EN PARALLELE PAR LE DERA. LA DIFFERENCE ENTRE LES DEUX PROFILS DE TEMPERATURE ISSUS DES DEUX SYSTEMES DE MESURES (OPTIQUES ET INTRUSIFS) EST DE L'ORDRE DE QUELQUES POURCENTS.

Download or read book Contribution l tude exp rimentale et la mod lisation de la combustion du gaz naturel en r acteur lit fluidis written by Pascaline Pré-Goubelle and published by . This book was released on 1997 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE DOMAINE D'APPLICATION DE LA COMBUSTION DIRECTE DU GAZ NATUREL EN REACTEUR A LIT FLUIDISE CONCERNE LES PROCEDES TELS QUE : LA REGENERATION OU LE TRAITEMENT DE DECHETS DE NATURE DIVERSE (SABLE DE FONDERIE, BOUES A FORT TAUX D'HUMIDITE), LA CALCINATION OU LE FRITTAGE THERMIQUE. DANS CES SYSTEMES, LA REACTION A LIEU NON SEULEMENT EN PHASE SOLIDE, MAIS EGALEMENT EN PHASE HOMOGENE. CETTE DERNIERE PEUT CONDUIRE A UN ECART DE TEMPERATURE SIGNIFICATIF ENTRE LES PHASES BULLE ET EMULSION, CE QUI REMET EN CAUSE L'HYPOTHESE DE L'ISOTHERMICITE DU LIT, HABITUELLEMENT RETENUE POUR CE TYPE DE CONTACTEUR. CETTE ETUDE VISE A AMELIORER LA COMPREHENSION DES MECANISMES MIS EN JEU LORS DE LA COMBUSTION D'UN PREMELANGE GAZEUX EN LIT FLUIDISE CONSTITUE DE PARTICULES INERTES. DANS UN PREMIER TEMPS, UNE ETUDE EXPERIMENTALE A ETE REALISEE SUR UN REACTEUR PILOTE DE 180 MM DE DIAMETRE. L'INFLUENCE DES PARAMETRES TELS QUE LA TEMPERATURE DU LIT, LA COMPOSITION INITIALE DU MELANGE COMBUSTIBLE, LA HAUTEUR DU LIT, LA VITESSE DE FLUIDISATION, LA TAILLE ET LA NATURE DES PARTICULES, ET LA NATURE DU DISTRIBUTEUR, SUR LE PROFIL AXIAL DE LA CONCENTRATION DES DIFFERENTS CONSTITUANTS (CH#4, O#2, CO#2, CO, NO, NO#2, N#2O) ONT ETE ETUDIES. LES RESULTATS EXPERIMENTAUX ONT MONTRE QUE LA COMBUSTION DU GAZ NATUREL EST INITIEE AU SEIN DE LA COUCHE FLUIDISEE AU DELA D'UNE VALEUR LIMITE DE LA TEMPERATURE DU LIT (SUPERIEURE A 750C), ET S'EFFECTUE SUIVANT UN PROCESSUS DE REACTION LENTE. CETTE ETUDE A FOURNI DES RENSEIGNEMENTS UTILES POUR LE CHOIX DES CONDITIONS OPERATOIRES PERMETTANT DE REDUIRE LES EMISSIONS DES IMBRULES ET DES POLLUANTS EN SORTIE DU LIT. EN PARTICULIER, IL FAUT SIGNALER QUE PARMI LES PARAMETRES ETUDIES, SEULE LA HAUTEUR DU LIT A UNE INFLUENCE NOTABLE SUR L'AVANCEMENT DE LA REACTION. DANS UN DEUXIEME TEMPS, UN MODELE A ETE ETABLI POUR LA COMBUSTION DU GAZ NATUREL EN LIT FLUIDISE. CE MODELE REPOSE SUR LES HYPOTHESES DU MODELE D'ASSEMBLAGE DE BULLES, QUI A ETE MODIFIE POUR TENIR COMPTE DES ECHANGES DE CHALEUR ENTRE LES PHASES, AINSI QU'ENTRE LE LIT FLUIDISE ET LA PAROI DU REACTEUR, EN INCLUANT LA CONTRIBUTION DU RAYONNEMENT. LA CONFRONTATION DES RESULTATS THEORIQUES ET EXPERIMENTAUX A MONTRE UNE BONNE ADEQUATION. L'ETUDE THEORIQUE A PERMIS EN OUTRE D'EXPLIQUER DE MANIERE PLUS PRECISE LES PHENOMENES QUI REGISSENT LE PROCESSUS DE COMBUSTION DU GAZ NATUREL EN LIT FLUIDISE.

Download or read book Contribution l tude de la combustion de basse temp rature de l ac tald hyde written by and published by . This book was released on 1961 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution l tude de la combustion en chambre sph rique des m langes h t rog nes particules solides gaz written by Luis Eugénio Pinto Teixeira de Lemos and published by . This book was released on 1989 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CONTRIBUTION A LA COMPREHENSION DES PROPRIETES RADIATIVES DES SUIES DANS UNE FLAMME DE PREMELANGE written by Mohamed Ben Hamadi and published by . This book was released on 1984 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE MEMOIRE PRESENTE UNE ETUDE EXPERIMENTALE ET THEORIQUE SUR LA REPONSE RADIATIVE DES SUIES ET DES GAZ DANS UNE FLAMME DE PREMELANGE PROPANE OU METHANE-OXYGENE. CE TRAVAIL S'INSCRIT DANS LE CADRE D'UNE ACTION, A.S.P. FEU, SUR LA MODELISATION DU DEVELOPPEMENT DES INCENDIES. L'ANALYSE A SURTOUT PORTE SUR L'EXAMEN DU RAYONNEMENT IR DES SUIES EN FONCTION DE LA TAILLE, DE LA FORME ET DE LA COMPOSITION DES SUIES (RAPPORT H/C, INDICE COMPLEXE...). UNE CARTOGRAPHIE DE LA FLAMME EN TEMPERATURE ET CONCENTRATION DES ESPECES PRESENTES A EGALEMENT ETE EFFECTUEE

Download or read book The Mediterranean region under climate change written by Collectif and published by IRD Éditions. This book was released on 2018-11-19 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been published by Allenvi (French National Alliance for Environmental Research) to coincide with the 22nd Conference of Parties to the United Nations Framework Convention on Climate Change (COP22) in Marrakesh. It is the outcome of work by academic researchers on both sides of the Mediterranean and provides a remarkable scientific review of the mechanisms of climate change and its impacts on the environment, the economy, health and Mediterranean societies. It will also be valuable in developing responses that draw on “scientific evidence” to address the issues of adaptation, resource conservation, solutions and risk prevention. Reflecting the full complexity of the Mediterranean environment, the book is a major scientific contribution to the climate issue, where various scientific considerations converge to break down the boundaries between disciplines.

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1969 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flows and Chemical Reactions in Heterogeneous Mixtures written by Roger Prud'homme and published by John Wiley & Sons. This book was released on 2014-12-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book - a sequel of previous publications 'Flows and Chemical Reactions' and 'Chemical Reactions in Flows and Homogeneous Mixtures' - is devoted to flows with chemical reactions in heterogeneous environments. Heterogeneous media in this volume include interfaces and lines. They may be the site of radiation. Each type of flow is the subject of a chapter in this volume. We consider first, in Chapter 1, the question of the generation of environments biphasic individuals: dusty gas, mist, bubble flow. Chapter 2 is devoted to the study at the mesoscopic scale: particle-fluid exchange of momentum and heat with determination of the respective exchange coefficients. In Chapter 3, we establish simplified equations of macroscopic balance for mass, for the momentum and energy, in the case of particles of one size (monodisperse suspension). Radiative phenomena are presented in Chapter 5.

Download or read book Bulletin of the Scientific and Technical Documentation Centre written by and published by . This book was released on 1957 with total page 1780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Download or read book El Ni o written by Bruno Voituriez and published by UNESCO. This book was released on 2000 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: El Nino, caprice of the heavens, scapegoat for every calamity? The general public cannot really understand what is behind the El Nino phenomenon. The book offers a tour of the Earth's climate to understand one of its normal but extreme components.

Download or read book Gas cooled Nuclear Reactors written by France. Commissariat à l'énergie atomique and published by . This book was released on 2006 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Parallel Finite Volume Algorithm for Large eddy Simulation of Turbulent Flows written by Trong T. Bui and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Greenhouse Gas Emissions Fluxes and Processes written by A. Tremblay and published by Springer Science & Business Media. This book was released on 2011-04-30 with total page 743 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a time when an unquestionable link between anthropogenic emissions of greenhouse gases and climatic changes has finally been acknowledged and * widely documented through IPCC reports, the need for precise estimates of greenhouse gas (GHG) production rates and emissions from natural as well as managed ecosystems has risen to a critical level. Future agreements between nations concerning the reduction of their GHG emissions will - pend upon precise estimates of the present level of these emissions in both natural and managed terrestrial and aquatic environments. From this viewpoint, the present volume should prove to a benchmark contribution because it provides very carefully assessed values for GHG emissions or exchanges between critical climatic zones in aquatic en- ronments and the atmosphere. It also provides unique information on the biases of different measurement methods that may account for some of the contradictory results that have been published recently in the literature on this subject. Not only has a large array of current measurement methods been tested concurrently here, but a few new approaches have also been developed, notably laser measurements of atmospheric CO concentration 2 gradients. Another highly useful feature of this book is the addition of - nitoring and process studies as well as modeling.

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.