The influence of condensate flow rate on heat transfer in film condensation of stationary vapour on horizontal tube banks

Kutateladze, S. S.; Gogonin, I. I.; Sosunov, V. I.

doi:10.1016/0017-9310(85)90283-2

Cited by 32 publications

(9 citation statements)

References 2 publications

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“…(19) and (20) is occurring in either direction without hysteresis. It should be noted in this context that Yung et al [25] gave an equation for the mass flow rate at the transition from the droplet to column mode on a plane tube which can be rearranged to give:…”

Section: Correlations For Flow Pattern Boundariesmentioning

confidence: 93%

“…Kutateladze et al [19] documented several flow modes formed by vapor condensation on horizontal tubes. Fujita [20] performed a literature review on absorption processes in droplet and column modes.…”

Section: Correlations For Flow Pattern Boundariesmentioning

confidence: 98%

“…19) In systems with a small difference between the densities of the phases, this difference must be included into the basic forms of the Ga, Oh and Su.…”

Section: Full Papermentioning

confidence: 99%

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Flow Structures of a Liquid Film Falling on Horizontal Tubes

Mitrovic

2005

Chem. Eng. Technol.

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Patterns of a liquid film falling across a vertical array of horizontal tubes change from droplet mode at low flow rates to liquid sheet at high flow rates. Between these limits, liquid columns form as a further stable flow pattern. The transition from one flow mode to another occurs via unstable structures consisting simultaneously of droplets and columns or of merging columns. The boundaries of the flow modes can be obtained from relationships expressing the flow rate as a function of physical properties, that is, the Reynolds number as a function of the Kapitza number. Correlations for the pattern boundaries recommended in the literature are compared with each other and found to be in acceptable agreement for practical purposes.

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Section: Correlations For Flow Pattern Boundariesmentioning

confidence: 93%

Section: Correlations For Flow Pattern Boundariesmentioning

confidence: 98%

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Flow Structures of a Liquid Film Falling on Horizontal Tubes

Mitrovic

2005

Chem. Eng. Technol.

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“…The comparison of the present work with the experimental results of Kutateladze et al (1985) is presented in Figure 4, which shows temperature profile in the intertube space. We observe a good prediction of the model.…”

Section: Liquid Falling Between the Tubesmentioning

confidence: 91%

Numerical study of laminar condensation of downward flowing vapour on a single horizontal cylinder or a bank of tubes

Asbik

Daïf

Panday³

et al. 1999

Can J Chem Eng

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The results of numerical calculations for the downward flow of pure vapour condensing on horizontal tubes are pre-sented. An implicit finite difference method is used. The equality of shear stress at the liquid-vapour interface is used as the coupling condition between the two phases. The inertia and convection terms are retained in the analysis. The vapour phase velocity is obtained from potential flow. The method of source density distribution on the body surface is used for the determination of the vapour flow in tube banks. The effect of flooding produced by condensation on upper tubes is taken into account by assuming that the vapour velocity field is not affected by the condensate flow from one tube to another. The results presented show that the vapour boundary layer separation depends on the Froude number. The heat transfer in the intertube space is analyzed and compared with the theoretical and experimental results of other authors. Good agreement is shown.Cet article presente une methode de calcul de la couche limite diphasique utilisant un schema simple aux differences finies de type implicite. L'application a la condensation d'un ecoulement de vapeur saturee sur la paroi d'un ou plusieurs cylindres circulaire est entreprise en ecrivant les conditions de couplage a I'interface liquide-vapeur et en conservant les termes d'inertie et de convection. L'analyse des resultats donne une idee plus Claire sur la position du point de decollement qui depend du nombre de Froude. A I'exterieur de la couche limite vapeur, la vitesse de I'ecoulement du fluide libre est determinee a I'aide de la methode des singularites. L'inondation produite par un ou par plusieurs tubes en amont est prise en compte en supposant que la vitesse de la vapeur n'est pas affectee par I'ecoulement de condensat entre les tubes. Les resultats de cette etude sont compares aux resultats experimentaux et theoriques trouves par d'autres auteurs. La confrontation est satisfaisante.

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“…2) so that the parts of the tube between columns of falling condensate are not affected and behave like the top tube. Chen [18] and Kutateladze et al [19] drew attention to the fact that the heat transfer could be significantly affected by condensation on the film between tubes. Leicy [20] noted the importance of inundation temperature control in measurements using simulated inundation, particularly in the case of enhanced tubes.…”

Section: Introductionmentioning

confidence: 99%