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Revue Générale de Thermique最新文献

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Influence des conditions d'émission sur un écoulement de type jet plan laminaire isotherme ou chauffé 发射条件对等温或加热层流平面射流的影响
Revue Générale de Thermique Pub Date : 1998-11-01 DOI: 10.1016/S0035-3159(98)80014-7
Hatem Mhiri , Salem El Golli , Georges Le Palec , Philippe Bournot
{"title":"Influence des conditions d'émission sur un écoulement de type jet plan laminaire isotherme ou chauffé","authors":"Hatem Mhiri ,&nbsp;Salem El Golli ,&nbsp;Georges Le Palec ,&nbsp;Philippe Bournot","doi":"10.1016/S0035-3159(98)80014-7","DOIUrl":"10.1016/S0035-3159(98)80014-7","url":null,"abstract":"<div><p>We propose numerical solutions for a laminar jet, accounting for emission conditions at the exit of the nozzle. Two emission cases are considered in this study: velocity and temperature profiles are uniform or parabolic, respectively. A finite difference scheme is developed for the resolution of the equations governing the isothermal and non-isothermal free jet and wall jet developing tangentially along an adiabatic flat plate. The analysed results are the centerline velocity and centerline temperature for the free jet, and wall temperature and shear stress for the wall jet. The results obtained are compared to another method that is based on two constraints of integration, i) conservation of momentum and ii) conservation of energy, to replace the emission conditions at the exit of the nozzle for the resolution of equations. Our results of the velocity and temperature profiles compare well with those obtained by the latter method solely in the plume region, where buoyancy forces are responsible for flow.</p></div>","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 10","pages":"Pages 898-910"},"PeriodicalIF":0.0,"publicationDate":"1998-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)80014-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74451295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Nouvelles de Kyongju (23–28 août 1998) 来自庆州的消息(1998年8月23 - 28日)
Revue Générale de Thermique Pub Date : 1998-11-01 DOI: 10.1016/S0035-3159(98)90012-5
{"title":"Nouvelles de Kyongju (23–28 août 1998)","authors":"","doi":"10.1016/S0035-3159(98)90012-5","DOIUrl":"https://doi.org/10.1016/S0035-3159(98)90012-5","url":null,"abstract":"","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 10","pages":"Page 911"},"PeriodicalIF":0.0,"publicationDate":"1998-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)90012-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136939307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Échanges convectifs locaux sur une couronne d'un disque en rotation 旋转圆盘日冕上的局部对流交换
Revue Générale de Thermique Pub Date : 1998-11-01 DOI: 10.1016/S0035-3159(98)80013-5
Souad Harmand, François Monnoyer, Barbara Watel, Bernard Desmet
{"title":"Échanges convectifs locaux sur une couronne d'un disque en rotation","authors":"Souad Harmand,&nbsp;François Monnoyer,&nbsp;Barbara Watel,&nbsp;Bernard Desmet","doi":"10.1016/S0035-3159(98)80013-5","DOIUrl":"10.1016/S0035-3159(98)80013-5","url":null,"abstract":"<div><p>This article sets out an experimental technique for the determination of the local convective heat transfer coefficients on the surface of a rotating disc. This technique is based on the use of thermally thick walls, on infrared thermography as a method of surface temperature determination, and on the numerical solution of the energy equation to evaluate the local convective exchanges. The tests were carried out on a disc with a large temperature difference between its periphery and its interior. The rotational Reynolds number varies from 2·10<sup>4</sup> to 1.4·10<sup>6</sup>, extending from the laminar to the turbulent regime. The experimental results are compared with the ones taken from the literature and show the influence of the disc geometry and of the nature of the temperature distribution law on its surface on the convective heat transfer.</p></div>","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 10","pages":"Pages 885-897"},"PeriodicalIF":0.0,"publicationDate":"1998-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)80013-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79548932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Three-dimensional non-grey gas radiative transfer analyses using the statistical narrow-band model 基于统计窄带模型的三维非灰色气体辐射传输分析
Revue Générale de Thermique Pub Date : 1998-10-01 DOI: 10.1016/S0035-3159(98)80002-0
Fengshan Liu, Ömer.L. Gülder, Gregory J. Smallwood
{"title":"Three-dimensional non-grey gas radiative transfer analyses using the statistical narrow-band model","authors":"Fengshan Liu,&nbsp;Ömer.L. Gülder,&nbsp;Gregory J. Smallwood","doi":"10.1016/S0035-3159(98)80002-0","DOIUrl":"10.1016/S0035-3159(98)80002-0","url":null,"abstract":"<div><p>Three-dimensional non-grey gas radiation analyses were conducted using the statistical narrow-band model with updated band parameters and three implementation methods: the exact or the correlated formulation, the non-correlated expression, and the grey-band approximation with the absorption coefficient estimated using the local properties. The accuracy of the two approximate narrow-band implementation methods was evaluated for both low-resolution spectral intensity and spectrally integrated radiative source term and wall heat flux in a rectangular enclosure containing (1) isothermal pure water and (2) a CO<sub>2</sub>/H<sub>2</sub>O/N<sub>2</sub> mixture with a furnace type gas temperature distribution. For spectrally integrated quantities, results of the grey-band approximation are very close to those of the non-correlated formulation and are in qualitative agreement with the results of the correlated formulation. The two approximate methods are capable of predicting qualitatively correct and fairly accurate distributions of low-resolution spectral radiation intensities for the isothermal case. However, they predict less accurate low-resolution spectral intensities for the non-isothermal case.</p></div>","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 9","pages":"Pages 759-768"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)80002-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73403600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Convection naturelle dans une cavité carrée avec des parois verticales soumises à des températures périodiques 具有垂直壁的方形腔内的自然对流受到周期性温度的影响
Revue Générale de Thermique Pub Date : 1998-10-01 DOI: 10.1016/S0035-3159(98)80005-6
Btissam Abourida, Mohammed Hasnaoui, Samira Douamna
{"title":"Convection naturelle dans une cavité carrée avec des parois verticales soumises à des températures périodiques","authors":"Btissam Abourida,&nbsp;Mohammed Hasnaoui,&nbsp;Samira Douamna","doi":"10.1016/S0035-3159(98)80005-6","DOIUrl":"10.1016/S0035-3159(98)80005-6","url":null,"abstract":"<div><p>The laminar natural convection in a square cavity submitted to different heating modes on its vertical walls, is investigated numerically. The temperature of the heated wall is varied sinusoidally with time while the temperature of the opposite vertical wall is either maintained constant or varied sinusoidally with time. The parameters of the study are the amplitude of the variable temperature(s) (0 ≤ <em>a</em> ≤ 0.8), its (their) period (0.001 ≤ τ &lt; 1), the Rayleigh number (10<sup>4</sup> ≤ <em>Ra</em> ≤ 10<sup>6</sup>) and the Prandtl number (<em>Pr</em> = 0.7). For adequate combinations of these parameters, the variation with time of the two imposed temperatures gives the possibility to control the heat transfer through the cold boundary of the cavity.</p></div>","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 9","pages":"Pages 788-800"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)80005-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77945254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Maximum principle and open systems including two-phase flows 最大原理和开放系统包括两相流
Revue Générale de Thermique Pub Date : 1998-10-01 DOI: 10.1016/S0035-3159(98)80007-X
Umberto Lucia
{"title":"Maximum principle and open systems including two-phase flows","authors":"Umberto Lucia","doi":"10.1016/S0035-3159(98)80007-X","DOIUrl":"10.1016/S0035-3159(98)80007-X","url":null,"abstract":"<div><p>Recently an extension of the principle of maximum, for the variation of the entropy due to irreversibility, has been obtained for the open systems. This result is analysed and a comparision between this one and other thermodynamical variational principles of stability is developed. An application to two-phase flows is done to obtain the pressure drop.</p></div>","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 9","pages":"Pages 813-817"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)80007-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89371220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Seminaires 研讨会
Revue Générale de Thermique Pub Date : 1998-10-01 DOI: 10.1016/S0035-3159(98)90068-X
{"title":"Seminaires","authors":"","doi":"10.1016/S0035-3159(98)90068-X","DOIUrl":"https://doi.org/10.1016/S0035-3159(98)90068-X","url":null,"abstract":"","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 9","pages":"Page 830"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)90068-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92121460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Referees for the revue génerale de thermique 1997 comité de lecture de la revue générale de thermique 1997 revue generale de thermique 1997的评审评审generale de thermique 1997的阅读委员会
Revue Générale de Thermique Pub Date : 1998-10-01 DOI: 10.1016/S0035-3159(98)90065-4
{"title":"Referees for the revue génerale de thermique 1997 comité de lecture de la revue générale de thermique 1997","authors":"","doi":"10.1016/S0035-3159(98)90065-4","DOIUrl":"https://doi.org/10.1016/S0035-3159(98)90065-4","url":null,"abstract":"","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 9","pages":"Page 742"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)90065-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91983354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Théses Théses
Revue Générale de Thermique Pub Date : 1998-10-01 DOI: 10.1016/S0035-3159(98)90070-8
{"title":"Théses","authors":"","doi":"10.1016/S0035-3159(98)90070-8","DOIUrl":"https://doi.org/10.1016/S0035-3159(98)90070-8","url":null,"abstract":"","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 9","pages":"Page 831"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)90070-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137089065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Réunions d'études pendant l'exercice du 1er octobre 1997 au 30 septembre 1998 1997年10月1日至1998年9月30日期间的研究会议
Revue Générale de Thermique Pub Date : 1998-10-01 DOI: 10.1016/S0035-3159(98)90071-X
{"title":"Réunions d'études pendant l'exercice du 1er octobre 1997 au 30 septembre 1998","authors":"","doi":"10.1016/S0035-3159(98)90071-X","DOIUrl":"https://doi.org/10.1016/S0035-3159(98)90071-X","url":null,"abstract":"","PeriodicalId":101133,"journal":{"name":"Revue Générale de Thermique","volume":"37 9","pages":"Pages 833-837"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0035-3159(98)90071-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137089067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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