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Academic literature on the topic 'Plaque ondulée'
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Journal articles on the topic "Plaque ondulée"
Vargas de Cristo, Sandro Sidnei, and Luis Eduardo De Souza Robaina. "Análise geomorfológica em Unidades de Conservação da Natureza: Estação Ecológica Serra Geral do Tocantins – Estados do Tocantins e da Bahia." Ateliê Geográfico 10, no. 3 (February 26, 2017): 73. http://dx.doi.org/10.5216/ag.v10i3.31162.
Full textDissertations / Theses on the topic "Plaque ondulée"
Cherubin-Grillo, David. "Caractérisation et modélisation du comportement mécanique d'une plaque ondulée en composites ciment/verre." Clermont-Ferrand 2, 2001. http://www.theses.fr/2001CLF21283.
Full textGradeck, Michel. "Structure de l'écoulement diphasique gaz-liquide dans les échangeurs à plaques corruguées." Nancy 1, 1996. http://www.theses.fr/1996NAN10302.
Full textThis study has been supported by the LEMTA and the associate lahoratories CEA-CENG GRETh in a national rescarch program on plate beat exchangers. Both the thermohydraulic and the hydrodynamic proper to the flow of newtonian or complex fluids arc now well known and the design of such exchangcrs does not set any difficult problem anymore. Although this kind of ex changer is widely used in two-phase systems, all the published works on this topic only involves plate fin exchangers. The main objectives or this work are firstly to establish a flow pattern map, secondly lo explain the friction mechanism (transfer mechanism) when the gas flux increases and when transition between two patterns occurs. The measurement of the local wall shear stress is made by electrochemical method call polarography and those of the local void fraction by an optical probe. The horizontal co-current gas-liquid flow has been first investigated using two kind of geometry (a bidimensionnal and a tridimensionnal) then the vertical upward one
Lottin, Olivier. "Étude du fonctionnement des réacteurs d'une pompe à chaleur à compression-absorption : modélisation des mécanismes de changement d'état d'un fluide binaire zéotrope s'écoulant en film tombant sur une plaque plane verticale." Nancy 1, 1996. http://www.theses.fr/1996NAN10315.
Full textThis report is a study of the absorber and the desorber of an absorptioncompression heat pump, which are falling film type reactors using vertical plates geometry. Two kinds of models with coupled heat and mass transfers are detailled. The first one is based on local equations using thermal and molecular diffusivities ; it allows the calculation of Nusselt and Sherwood numbers. The second one is based on equations using heat and mass transfer coefficient. Both models give heat flux and mass flux in the liquid solution and in the vapor. The influence of the value of heat and mass coefficients that appear in the second, model on the global performances of the absorption-compression cycle is presented. Sorne results are compared with measurements made on an experimental heat pump. A second experimental study is made to compare the efficiency of different corrugated plates used in the reactors
Hoareau, Bertrand. "Ébullition en convection forcée entre plaques ondulées horizontales." Vandoeuvre-les-Nancy, INPL, 2003. http://www.theses.fr/2003INPL105N.
Full textSeigneurin, Alain. "Instabilité de structures formées de plaques orthotropes (écrasement de caissons en carton ondulé)." Bordeaux 1, 1988. http://www.theses.fr/1988BOR10547.
Full textKauffmann, Robert. "Contribution à l'étude de quelques problèmes sur des ouverts ondulés et des plaques perforées." Metz, 1994. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1994/Kauffman.Robert.SMZ9448.pdf.
Full textAt the beginning of the first part, we consider the thermal stationnary equation upon three corrugated opens, with a constant thickness e and a constant medium radius of the corrogatings R: corrogated sheet iron T, tin and section of this lasts. We study the limit of the temperature when e, then R tend to O. In each case the limit is one and is solution of a differential equation of the second order. The inversion of the limits is realised. Regarding the elasticity problem upon T, the shell theory obliges us to choose a straight section more regular. Then, the displacement converges, when e tend to O, to a function which is defined in one manner and solution of a differential equation of the fourth order. Then, when R tend to O, the displacement converges to O. The initial displacement converges also to O, with e being constant. In the second part, we consider the linearized elasticity equations upon a rectangular plate, perforated with square section holes which are distributed in a periodic fashion and supposed horizontal. The study of the displacement's limit when the thickness tend to O, leads us to differentiate two cases, functions of the elasticity coefficients of the materials. Then in each one, we study the limit of displacement when the period of the holes, and then the parameter which caracterises the distance between two holes tend to O. In the first case, the three limits exist in a single manner and are solutions of differential equations of the second order : case of membranes. In the second one, the three limits still exist in one single manner, but they are solutions of differential equations of the second order for the horizontal components, and of the fourth order for the vertical component : case of thin plates
Seigneurin, Alain. "Instabilité de structures formées de plaques orthotropes écrasement de caissons en carton ondulé /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37618514k.
Full textKAUFFMANN, ROBERT SAINTJEANPAULIN J. "CONTRIBUTION A L'ETUDE DE QUELQUES PROBLEMES SUR DES OUVERTS ONDULES ET DES PLAQUES PERFOREES /." [S.l.] : [s.n.], 1994. ftp://ftp.scd.univ-metz.fr/pub/Theses/1994/Kauffman.Robert.SMZ9448.pdf.
Full textDESSOLIN, JOEL. "Etude de la reduction de trainee et de la stabilite d'une couche limite laminaire sur une plaque equipee d'une serie de perturbateurs." Toulouse 3, 1998. http://www.theses.fr/1998TOU30030.
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