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
Analytical modeling of natural convection in concentric spherical enclosures
TL;DR: In this article, a model based on the linear superposition of conduction and convection solutions was developed for natural convection heat transfer from isothermal heated sphere located at the center of an isothermal, cooled, spherical-shaped enclosure.
Journal ArticleDOI
A Numerical Study on Natural Convention Heat Transfer From a Horizontal Isothermal Cylinder Located Underneath an Adiabatic Ceiling
TL;DR: In this article, a finite-volume method based on the SIMPLE algorithm and a nonorthogonal grid discretization scheme is used to solve the continuity, momentum, and energy equations for the Rayleigh numbers in the range from 10−1 to 104.
Journal ArticleDOI
Numerical Investigation of Transient Natural Convection Heat Transfer of non-Newtonian Nanofluids Between Eccentric Annulus
TL;DR: In this article, the authors studied the effect of the Ra number on the heat transfer of non-Newtonian nanofluids with respect to the gap between the gap of two horizontal cylinders.
Dissertation
Production optimale d’énergie pour une communauté à petite échelle : application à l’optimisation d’une centrale solaire hybride produisant électricité et chaleur
TL;DR: The Cycle Organique de Rankine Cycle (ORCOCR Cycle Cycle Cycle) as mentioned in this paper is an example of a cycle model based on a thermodynamic solver, which can be used to determine the profil de temperature dans le stock a n'importe quel instant.
Journal ArticleDOI
Experimental investigation of conjugate natural convection heat transfer from a horizontal isothermal cylinder with a nonisothermal longitudinal plate fin at various angles
A. K. Tolpadi,Thomas H. Kuehn +1 more
TL;DR: In this paper, a single nonisothermal longitudinal plate fin at various angles is studied experimentally for steady laminar natural convection heat transfer from a horizontal isothermal cylinder in water.
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.