André Bontemps

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Thomas Pierret

University of Edinburgh

Edith Szanto

University of Alabama - Tuscaloosa

Benjamin Isakhan

Deakin University

Nuri Salık

Ankara Yildirim Beyazit University

James M. Dorsey

Nanyang Technological University

Simon Wolfgang Fuchs

The Hebrew University of Jerusalem

Anna M. Agathangelou

York University

Y. Dogan Cetinkaya

Istanbul University

Federico Donelli

Università degli Studi di Trieste

Werner Bonefeld

University of York

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Papers by André Bontemps

Development of a Compact Heat Exchanger for Gas Turbine Heat Recovery

The recovery of exhaust gas energy from gas turbines to heat air before it enters the combustion ... more The recovery of exhaust gas energy from gas turbines to heat air before it enters the combustion chamber can reduce specific consumption significantly. This can be achieved by using a heat exchanger operating at higher pressures and temperatures. The design concept of a lightweight compact recuperator is presented together with prototype testing leading to the full scale heat exchanger. Thermal and aeraulic performances were measured and cyclic duty and fouling tests were carried out.

Simplified Expressions for the Yield of Nuclear Reactions for the Solid Angle Subtended by a Slit

Nuclear Instruments and Methods, 1972

Realistic and efficient simulation of electro-thermal effects in VLSI circuits

IEEE Transactions on Very Large Scale Integration Systems, Sep 1, 1997

... 289 Veronique Aubert was bom in Marseille, France, ifiMarch 1968. ... In 1992, he became a Pr... more

Experimental investigation of heat transfer of supercritical carbon dioxide flowing in a cooled vertical tube

HAL (Le Centre pour la Communication Scientifique Directe), 2009

ABSTRACT

Realistic and efficient simulation of electro-thermal effects in VLSI circuits

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 1997

... 289 Veronique Aubert was bom in Marseille, France, ifiMarch 1968. ... In 1992, he became a Pr... more

Condensation of a vapour with incondensables: An improved gas phase film model accounting for the effect of mass transfer on film thickness

International Journal of Heat and Mass Transfer, 1990

... (1990). An improved gas phase film model is presented for calculation of local skin friction,... more

La langue française a-t-elle encore une place dans les publications de thermique? Études de cas

On assiste depuis plusieurs décennies à une marginalisation des publications et des communication... more On assiste depuis plusieurs décennies à une marginalisation des publications et des communications qui ne sont pas effectuées en langue anglaise. Dans cette communication on considère le cas des publications en langue française en particulier dans le domaine de la thermique. On étudiera l'évolution en fonction du temps du contenu linguistique de quatre revues et on la comparera si possible à l'évolution du contexte international.

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Countercurrent gas–liquid flow in plate-fin heat exchangers with plain and perforated fins

International Journal of Heat and Fluid Flow, Aug 1, 2001

Countercurrent gas-liquid flow in narrow rectangular channels simulated by plain and perforated f... more Countercurrent gas-liquid flow in narrow rectangular channels simulated by plain and perforated fins is studied. Different flow patterns dependent on flow rates are observed and visualised in the channels. Flooding velocities and pressure drops are measured. Results are compared with previous experimental data obtained in rectangular channels. The present results focus on two particular types of flooding phenomena: that occurring at the column base and linked to plugging and that at the top, linked to reentrainment. A further set of experiments using perforated fins surprisingly shows a greater tendency to flooding of the perforated fins. However, there are marked differences for the two types of fins and an explanation may be the two distinct flooding occurrences.

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Condensation of Pure and Mixture of Hydrocarbons in a Compact Heat Exchanger: Experiments and Modelling

Heat Transfer Engineering, Nov 1, 2002

This article presents a study on heat transfer in condensation of pure and mixtures of hydrocarbo... more This article presents a study on heat transfer in condensation of pure and mixtures of hydrocarbons in a compact welded plate heat exchanger. Three pure uids (pentane, butane, and propane) and two mixtures (butane C propane) have been used. The operating pressure ranges from 1.5 to 18 bar. For pure uids, two heat transfer mechanisms have been identi ed. For low Reynolds numbers, the condensation occurs almost lmwise and the heat transfer coef cient decreases with increasing Reynolds number. For higher values of the Reynolds number, the heat transfer coef cient increases gently. The transition between the two regimes is between Re D 100 and 1,000 and depends on the operating conditions. For mixtures, the behavior is different. For low Reynolds numbers, mass transfer affects heat transfer and reduces the heat transfer coef cient by a factor of up to 4. Correlations for lmwise and in-tube condensation do not predict the results accurately, and a speci c correlation is proposed for pure uid condensation. For mixtures, the condensation curve method does not allow mass transfer effects to be taken into account, and more work is required to establish an accurate predictive model. Condensation occurs in many industrial processes, but rarely with pure uids. The uids encountered are mixtures and often noncondensabl e gases are present, and this makes the condensation process very complex.

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Échangeurs de chaleur - Dimensionnement thermique

Échangeurs de chaleur - Intensification des échanges thermiques

Tous ces auteurs font partie du Groupement pour la recherche sur les Echangeurs thermiques (GRETh... more Tous ces auteurs font partie du Groupement pour la recherche sur les Echangeurs thermiques (GRETh) . Le domaine de l’intensification des echangeurs de chaleur a depuis de nombreuses annees depasse le stade du laboratoire et a ete largement pris en compte dans les applications industrielles. Nombre d’echangeurs dans des procedes tres divers sont equipes de surfaces d’echange (tubes ou plaques) specialement concues pour presenter des coefficients d’echange de chaleur eleves et notamment superieurs a ceux des surfaces d’echange lisses.

Laser annealing of Bi implanted <111> and <100> silicon

Applied Physics A, May 1, 1981

The influence of surface orientation in Bi implanted silicon, annealed by Q-switched ruby laser p... more The influence of surface orientation in Bi implanted silicon, annealed by Q-switched ruby laser pulse irradiation was investigated. Depth distributions and lattice location of the Bi atoms were obtained using4He backscattering and channeling techniques and the electrical behavior studied by sheet resistance measurements. The dopant profiles show partial surface accumulation and in-depth broadening without influence of the substrate orientation. These profiles can be fitted by a numerical calculation based on the normal freezing model with an interfacial segregation coefficient much higher than the equilibrium one. The impurity atoms located in the in-depth profile are shown to be electrically active when their maximum concentration does not exceed 1020 atoms/cm3.

Experimental study of convective heat transfer and pressure loss of SiO<inf>2</inf>/water nanofluids Part 1: Nanofluid characterization - Imposed wall temperature

This paper describes an experimental study on the convective heat transfer of SiO2/water nanoflui... more This paper describes an experimental study on the convective heat transfer of SiO2/water nanofluids inside a circular tube with imposed wall temperature. To our knowledge, very few papers have been published with temperature boundary conditions and none in cooling conditions. The experimental apparatus is described which allows us to measure local wall temperatures as well as fluid inlet/outlet temperatures. The

Polysilicon transistors on glass by pulsed‐laser annealing

Journal of Applied Physics, May 1, 1982

Amorphous silicon thin films deposited on glass substrates were crystallized by pulsed-laser anne... more Amorphous silicon thin films deposited on glass substrates were crystallized by pulsed-laser annealing. A grain size up to 2000 Å was observed. Transistors were made, and electrical measurements showed that the field-effect mobility was in the range 15–20 cm2/V s, instead of 10−2−10−3 cm2/V s in the unannealed regions.

P-25 Design and experimental study of an ultrasonically assisted shell-and-tube heat exchanger(Poster Presentations)

ソノケミストリー討論会講演要旨集, Nov 15, 2007

Caractérisation expérimentale de l'ébullition de fluide réfrigérant en convection forcée dans des mini-canaux

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Use of Nuclear Reactions to Determine the Quantity of Impurities in Semiconductors

Recuit D'Implatation Par Faisceau D'Électrons Balayés

Journal de physique. Colloque, Oct 1, 1983

R6sum6-Des kchantillons de silicium dop6s au Bore par implantation (BF, 30 Kev, 1015 ions x cm-2)... more R6sum6-Des kchantillons de silicium dop6s au Bore par implantation (BF, 30 Kev, 1015 ions x cm-2) ont 6t6 recuits 2 l'aide d'un faisceau d16lect;ons balaygs, 5 des tempgratures allant de 1000 2 1200°C. Les courbes de Roen fonction du temps de recuit pr6sentent un minimum. Des dosages de Bore par &action nucl6aire ont montr6 que l'augmentation du Ropour les temps de recuit importants est due $ une exodiffusion du Bore. Les mesures de profondeur de jonction par spreadin resistance sur biseau indiquent des redistributions de quelques centaines d'f a 1000 i.

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Heat transfer in-tube condensation of a zeotropic mixture of HFC23/HFC134a in a horizontal smooth tube

Ion implantation using nuclear reactions

Development of a Compact Heat Exchanger for Gas Turbine Heat Recovery

Simplified Expressions for the Yield of Nuclear Reactions for the Solid Angle Subtended by a Slit

Nuclear Instruments and Methods, 1972

Realistic and efficient simulation of electro-thermal effects in VLSI circuits

IEEE Transactions on Very Large Scale Integration Systems, Sep 1, 1997

... 289 Veronique Aubert was bom in Marseille, France, ifiMarch 1968. ... In 1992, he became a Pr... more

Experimental investigation of heat transfer of supercritical carbon dioxide flowing in a cooled vertical tube

HAL (Le Centre pour la Communication Scientifique Directe), 2009

ABSTRACT

Realistic and efficient simulation of electro-thermal effects in VLSI circuits

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 1997

... 289 Veronique Aubert was bom in Marseille, France, ifiMarch 1968. ... In 1992, he became a Pr... more

Condensation of a vapour with incondensables: An improved gas phase film model accounting for the effect of mass transfer on film thickness

International Journal of Heat and Mass Transfer, 1990

... (1990). An improved gas phase film model is presented for calculation of local skin friction,... more

La langue française a-t-elle encore une place dans les publications de thermique? Études de cas

Download

Countercurrent gas–liquid flow in plate-fin heat exchangers with plain and perforated fins

International Journal of Heat and Fluid Flow, Aug 1, 2001

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Condensation of Pure and Mixture of Hydrocarbons in a Compact Heat Exchanger: Experiments and Modelling

Heat Transfer Engineering, Nov 1, 2002

Download

Échangeurs de chaleur - Dimensionnement thermique

Échangeurs de chaleur - Intensification des échanges thermiques

Laser annealing of Bi implanted <111> and <100> silicon

Applied Physics A, May 1, 1981

Experimental study of convective heat transfer and pressure loss of SiO<inf>2</inf>/water nanofluids Part 1: Nanofluid characterization - Imposed wall temperature

Polysilicon transistors on glass by pulsed‐laser annealing

Journal of Applied Physics, May 1, 1982

P-25 Design and experimental study of an ultrasonically assisted shell-and-tube heat exchanger(Poster Presentations)

ソノケミストリー討論会講演要旨集, Nov 15, 2007

Caractérisation expérimentale de l'ébullition de fluide réfrigérant en convection forcée dans des mini-canaux

Download

Use of Nuclear Reactions to Determine the Quantity of Impurities in Semiconductors

Recuit D'Implatation Par Faisceau D'Électrons Balayés

Journal de physique. Colloque, Oct 1, 1983

Download

Heat transfer in-tube condensation of a zeotropic mixture of HFC23/HFC134a in a horizontal smooth tube

Ion implantation using nuclear reactions

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