Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

Volumes:
Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2016010722
pages 391-399

NATURAL CONVECTION IN A RECTANGULAR ENCLOSURE WITH AN ARRAY OF DISCRETE HEAT SOURCES

S. Saravanan
UGC-DRS Center for Fluid Dynamics, Department of Mathematics, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
V. P. M. Senthil Nayaki
Department of Mathematics, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
P. Kandaswamy
Department of Mathematics, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India

RESUMO

A study of natural convection from a 3 × 3 array of isoflux discrete heat sources mounted on one of the vertical walls in a three-dimensional rectangular enclosure is made. Two different boundary conditions are considered, one in which the two side walls are cooled and the other in which the top and bottom walls are cooled. Numerical solutions are obtained using a finite volume method. Flow and heat transfer characteristics are investigated as a function of Rayleigh number (Ra), aspect ratio (A), and Prandtl number (Pr). The results show that the heat transfer rate increases with Ra. It also increases against A in the range 1-3, however, attains a maximum at around A = 3 and decreases beyond that. The entire enclosure above the bottom heaters is found to be more thermally active when the top and bottom walls are kept cold. However, an effective cooling is possible only in the case of side cold walls.


Articles with similar content:

EFFECT OF NUMBER OF BLOCKS ON THE PERIODIC NATURAL CONVECTION INSIDE AN ENCLOSURE HEATED FROM THE SIDE
Second Thermal and Fluids Engineering Conference, Vol.30, 2017, issue
S. Moussa Mirehei, Jose' L. Lage
EFFECTS OF OUT OF PHASE AND INCLINATION ANGLES ON NATURAL CONVECTION HEAT TRANSFER FLOW OF AIR INSIDE A SINUSOIDAL CORRUGATED ENCLOSURE WITH SPATIALLY VARIABLE WALL TEMPERATURE
Journal of Enhanced Heat Transfer, Vol.18, 2011, issue 5
Salam Hadi Hussain, Rehab Noor Mohammed
EFFECT OF CONJUGATE NATURAL CONVECTION FLOW IN A SQUARE ENCLOSURE WITH ALL SIDE WALL
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Aswatha, Balesh Babali, K. N. Seetharamu
CONJUGATE NATURAL CONVECTION IN AN INCLINED SQUARE POROUS ENCLOSURE WITH FINITE WALL THICKNESS AND PARTIALLY HEATED FROM ITS LEFT SIDEWALL
Heat Transfer Research, Vol.47, 2016, issue 4
Sameh Elsayed Ahmed, M. M. Abd El-Aziz, Sivanandam Sivasankaran, Ahmed Kadhim Hussein
NATURAL CONVECTION IN A CAVITY FILLED WITH POROUS MEDIUM WITH PARTIALLY THERMAL ACTIVE SIDEWALLS UNDER LOCAL THERMAL NONEQUILIBRIUM CONDITIONS
Journal of Porous Media, Vol.17, 2014, issue 11
Gang Wang, Feng Wu, Wenjing Zhou