Steady laminar free convection in air from a pair of misaligned, parallel horizontal cylinders, i.e., a pair of parallel cylinders with their axes set in a plane inclined with respect to the gravity vector, is studied numerically. A specifically developed computer code based on the SIMPLE-C algorithm is used for the solution of the dimensionless mass, momentum, and energy transfer governing equations. Results are presented for different values of the center-to-center cylinder spacing from 1.4 up to 10 diameters, the tilting angle of the two-cylinder array from , and the Rayleigh number based on the cylinder diameter in the range between and . It is found that the heat transfer rates at both cylinder surfaces may in principle be traced back to the combined contributions of the so-called plume effect and chimney effect, which are the mutual interactions occurring in the vertical and horizontal alignments, respectively. In addition, at any misalignment angle, an optimum spacing between the cylinders for the maximum heat transfer rate, which decreases with increasing the Rayleigh number, does exist. Heat transfer dimensionless correlating equations are proposed for any individual cylinder and for the pair of cylinders as a whole.
Skip Nav Destination
e-mail: massimo.corcione@uniroma1.it
Article navigation
Research Papers
Correlating Equations for Laminar Free Convection From Misaligned Horizontal Cylinders in Interacting Flow Fields
Massimo Corcione,
Massimo Corcione
Mem. ASME
Dipartimento di Fisica Tecnica,
e-mail: massimo.corcione@uniroma1.it
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, Italy
Search for other works by this author on:
Claudio Cianfrini,
Claudio Cianfrini
Dipartimento di Fisica Tecnica,
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, Italy
Search for other works by this author on:
Emanuele Habib,
Emanuele Habib
Dipartimento di Fisica Tecnica,
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, Italy
Search for other works by this author on:
Gino Moncada Lo Giudice
Gino Moncada Lo Giudice
Dipartimento di Fisica Tecnica,
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, Italy
Search for other works by this author on:
Massimo Corcione
Mem. ASME
Dipartimento di Fisica Tecnica,
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, Italye-mail: massimo.corcione@uniroma1.it
Claudio Cianfrini
Dipartimento di Fisica Tecnica,
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, Italy
Emanuele Habib
Dipartimento di Fisica Tecnica,
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, Italy
Gino Moncada Lo Giudice
Dipartimento di Fisica Tecnica,
University of Rome “La Sapienza,”
via Eudossiana 18, Rome I 00184, ItalyJ. Heat Transfer. May 2008, 130(5): 052501 (11 pages)
Published Online: March 27, 2008
Article history
Received:
March 8, 2007
Revised:
May 10, 2007
Published:
March 27, 2008
Citation
Corcione, M., Cianfrini, C., Habib, E., and Moncada Lo Giudice, G. (March 27, 2008). "Correlating Equations for Laminar Free Convection From Misaligned Horizontal Cylinders in Interacting Flow Fields." ASME. J. Heat Transfer. May 2008; 130(5): 052501. https://doi.org/10.1115/1.2780183
Download citation file:
Get Email Alerts
Cited By
On Prof. Roop Mahajan's 80th Birthday
J. Heat Mass Transfer
Thermal Hydraulic Performance and Characteristics of a Microchannel Heat Exchanger: Experimental and Numerical Investigations
J. Heat Mass Transfer (February 2025)
Related Articles
Natural Convection Heat Transfer From a Cylinder With High Conductivity Permeable Fins
J. Heat Transfer (April,2003)
Natural Convection Heat Transfer in a Partially Open Square Cavity With a Thin Fin Attached to the Hot Wall
J. Heat Transfer (May,2008)
A General Scheme for the Boundary Conditions in Convective and Diffusive Heat Transfer With Immersed Boundary Methods
J. Heat Transfer (November,2007)
On Gaseous Free-Convection Heat Transfer With Well-Defined Boundary Conditions
J. Heat Transfer (November,2000)
Related Proceedings Papers
Related Chapters
Cooling of Steel Spherical Balls by Natural Convection and Radiation Heat Transfer in Unsteady State
Electromagnetic Waves and Heat Transfer: Sensitivites to Governing Variables in Everyday Life
Applications
Introduction to Finite Element, Boundary Element, and Meshless Methods: With Applications to Heat Transfer and Fluid Flow
System Thermal Analysis – Small Boxes
Thermal Management of Telecommunication Equipment, Second Edition