Journal ArticleDOI
Correlating equations for natural convection heat transfer between horizontal circular cylinders
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In this paper, a conduction boundary-layer model is used for heat transfer by conduction, laminar flow and turbulent flow. Butler et al. obtained a correlation for convection from a free horizontal cylinder as the outer cylinder diameter becomes infinite and for quasi-steady heat transfer to fluid within a horizontal cylinder.About:
This article is published in International Journal of Heat and Mass Transfer.The article was published on 1976-10-01. It has received 257 citations till now. The article focuses on the topics: Churchill–Bernstein equation & Heat transfer.read more
Citations
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Journal ArticleDOI
Heat transfer at the solid-liquid interface during melting from a horizontal cylinder
A.G. Bathelt,R. Viskanta +1 more
TL;DR: In this article, the instantaneous shape of the melt volume was recorded photographically and local heat transfer coefficients at the solid-liquid interface, determined from these data, were determined using the correlation of the heat transfer results in dimensionless form.
Journal ArticleDOI
Effects of Dissolved Gas Content on Pool Boiling of a Highly Wetting Fluid
TL;DR: In this article, the effects on the boiling curve of having air dissolved in the fluid are documented, showing that fluid in the vicinity of the heating element is apparently liberated of dissolved gas during boiling.
Journal ArticleDOI
Natural convection from horizontal cylinders in interacting flow fields
Bakhtier Farouk,S. I. Güçeri +1 more
TL;DR: In this paper, the authors investigated natural convection heat transfer from single and double rows of closely spaced isothermal heated cylinders for both laminar and turbulent cases, where a sufficiently large number of cylinders are considered in each row such that a symmetry unit can be considered for the analysis.
Journal ArticleDOI
A critical review of buoyancy-induced flow transitions in horizontal annuli
TL;DR: In this paper, the main mechanisms of transition of buoyancy-induced flows in the horizontal annulus between circular cylinders are reviewed, based on the available literature, both experimental and theoretical studies are considered.
Journal ArticleDOI
A numerical investigation of transient natural convection heat transfer of aqueous nanofluids in a horizontal concentric annulus
TL;DR: In this article, a numerical study of transient natural convection heat transfer of aqueous nanofluids in a horizontal annulus between two coaxial cylinders is presented, in which the effects of the Brownian motion of nanoparticles are taken into consideration.
References
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Journal ArticleDOI
Correlating equations for laminar and turbulent free convection from a horizontal cylinder
TL;DR: In this article, a simple empirical expression for the mean value of Nu over the cylinder for all Ra and all Pr is developed in terms of the model of Churchill and Usagi.
Journal ArticleDOI
A general expression for the correlation of rates of transfer and other phenomena
Stuart W. Churchill,R. Usagi +1 more
TL;DR: The expression Y = (1 + Zn)1/n where Y and Z are expressed in terms of the solutions for asymptotically large and small values of the independent variable is shown to be remarkably successful in correlating rates of transfer for processes which vary uniformly between these limiting cases as discussed by the authors.
Journal ArticleDOI
An experimental and theoretical study of natural convection in the annulus between horizontal concentric cylinders
TL;DR: In this paper, an experimental and theoretical-numerical investigation has been carried out to extend existing knowledge of velocity and temperature distributions and local heat-transfer coefficients for naturel convection within a horizontal annulus.
Book ChapterDOI
A General Method of Obtaining Approximate Solutions to Laminar and Turbulent Free Convection Problems
G. D. Raithby,K.G.T. Hollands +1 more
TL;DR: In this paper, the authors focus on determining equations for the local and mean rate of laminar heat transfer, which are approximately valid for different geometries by use of these equations, several new correlations are obtained for various heat transfer problems, and the results compared with experiments.
Journal ArticleDOI
Laminar free convection in boundary layers near horizontal cylinders and vertical axisymmetric bodies
D. A. Saville,S. W. Churchill +1 more
TL;DR: In this paper, the problem of describing free convection near either horizontal cylinders or vertical axisymmetric bodies with fairly arbitrary body contours is studied and the solutions of two coupled, coupled, partial differential equations, for the temperature and stream functions, are represented by series which are universal with respect to body shapes within a specified class of body shapes.