STUDY OF MIXED CONVECTION IN A CYLINDRICA L DUCT - ANALYTICAL NUMERICAL APPROACHES AND EXPERIMENTAL-DETERMINATION OF WALL TEMPERATURE BY INFRARED THERMOGRAPHY

Citation
C. Abid et al., STUDY OF MIXED CONVECTION IN A CYLINDRICA L DUCT - ANALYTICAL NUMERICAL APPROACHES AND EXPERIMENTAL-DETERMINATION OF WALL TEMPERATURE BY INFRARED THERMOGRAPHY, International journal of heat and mass transfer, 37(1), 1994, pp. 91-101
Citations number
15
Categorie Soggetti
Mechanics,"Engineering, Mechanical",Thermodynamics
ISSN journal
00179310
Volume
37
Issue
1
Year of publication
1994
Pages
91 - 101
Database
ISI
SICI code
0017-9310(1994)37:1<91:SOMCIA>2.0.ZU;2-Q
Abstract
Laminar flow in a horizontal heated duct is characterized by a tempera ture gradient between the top and the bottom of a cross section due to mixed convection phenomenon. Wall temperature field is measured by in frared thermography. The aim of this paper is to present experimental results and analytical study allowing us to put in a prominent positio n some parameters which take into account the mixed convection phenome non and, thereby, to describe the thermal behaviour of the duct. The n umerical approach, using the Navier-Stokes equations coupled to the en ergy equation, completes this study showing, therefore, the secondary flow and the fluid temperature field in a cross section.