Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Transfer Research
Facteur d'impact: 1.199 Facteur d'impact sur 5 ans: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

Volumes:
Volume 51, 2020 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.2012004656
pages 507-534

MIXED CONVECTION AND ITS INTERACTION WITH SURFACE RADIATION IN A DIFFERENTLY HEATED ENCLOSURE: A CRITICAL APRAISAL

Swarup Kumar Mahapatra
Indian Institute of Technology Bhubaneswar
Sikata Samantaray
Siksha 'O' Anusandhan University, ITER, BBSR-751030, ODISHA, INDIA
Amitava Sarkar
Department of Mechanical Engineering, Jadavpur University, Kolkata, India-700032

RÉSUMÉ

The present study is based on numerical investigation of mixed convection coupled with surface radiation within a differentially heated square cavity. The effect of surface radiation on the flow regimes, because of the combined effect of shear induced flow and buoyancy, was investigated. We analyzed the flow which is steady, two-dimensional, and laminar within a differentlially heated cavity. The fluid is considered to be incompressible and the source term is evaluated using the Boussinesq approximation. The finite difference method was employed as a numerical scheme to solve the momentum and energy equations. The net radiation method is used to evaluate radiosity from diffuse and gray surfaces. A parametric study was conducted with the following controlling parameters: Rayleigh number (Ra), Richardson number (Ri), emissivity (e), and wall motion. It is found that for opposing mixed convection regimes (i.e., at Ri = 1 or more) in the presence of surface radiation, the heat transfer rate is higher for the horizontal wall movement than that for the vertical wall movement. In the presence of pure opposing mixed convection, the minimum heat transfer rate occurs at the Richardson number Ri =1 for the vertical wall movement, but at the Richardson number Ri = 1.8 for the horizontal wall movement. In contrast to the convective heat transfer, radiative heat transfer is found to be independent of Ri and wall movement.


Articles with similar content:

TRANSIENT ANALYSIS OF MIXED CONVECTION IN A BOTTOM-HEATED SQUARE CAVITY IN THE PRESENCE OF SURFACE RADIATION
Computational Thermal Sciences: An International Journal, Vol.5, 2013, issue 5
Sofen K. Jena, Amitava Sarkar, Swarup Kumar Mahapatra, Sikata Samantaray
FORCED CONVECTIVE HEAT TRANSFER FOR A SELF SUSTAINED OSCILLATORY FLOW IN A CONVERGING-DIVERGING CHANNEL
International Heat Transfer Conference 11, Vol.5, 1998, issue
Rene Creff, Serge Blancher
Natural Convection Heat Transfer in an Inclined Porous Cavity under Time-Periodic Boundary Conditions with Positive/Negative Inclined Angles
Journal of Porous Media, Vol.11, 2008, issue 6
Hiroyuki Ozoe, Gang Wang, Qiuwang Wang, Min Zeng
NATURAL CONVECTION HEAT TRANSFER IN A NANOFLUID-FILLED HORIZONTAL LAYER WITH SINUSOIDAL WALL TEMPERATURE AT THE BOTTOM BOUNDARY
Heat Transfer Research, Vol.49, 2018, issue 11
Qiuwang Wang, H. Ozoe, Z. L. Fan, G. Wang, Min Zeng
TURBULENT CONVECTION WITH AND WITHOUT THERMAL RADIATION IN A BACK HEATED OPEN CAVITY SWEPT BY AN EXTERNAL FORCED FLOW
International Heat Transfer Conference 10, Vol.3, 1994, issue
C.X. Lin, Shao-Yen Ko, M.D. Xin