Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 0.7

ISSN Imprimir: 1940-2503
ISSN On-line: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2013004203
pages 261-272

MIXED CONVECTIVE RAREFIED FLOWS WITH SYMMETRIC AND ASYMMETRIC HEATED WALLS

Hamid Niazmand
Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
Behnam Rahimi
Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran

RESUMO

Mixed convection gaseous slip flows in an open-ended vertical parallel-plate channel with symmetric and asymmetric wall temperatures are numerically investigated. Buoyancy effects on developing and fully developed solutions are studied by solving the Navier-Stokes and energy equations using a control volume technique and SIMPLE algorithm. The velocity and temperature fields are examined for different values of Knudsen number, mixed convection parameter, and temperature ratio. It is found that decreasing temperature ratio leads to higher velocity slip along this wall. Moreover, the friction coefficient increases with increasing mixed convection parameter on the hot wall, whereas it decreases on the cold wall. It is also noticed that with an increase in mixed convection parameter, the net heat absorbed by the fluid becomes higher and the Nusselt number increases. Furthermore, the centerline pressure drops in the early sections of the channel due to the dominance of the viscous effects; however, it builds up later along the channel, when the buoyancy forces gain weight and play the dominant role.


Articles with similar content:

Pitchfork Bifurcation of the Mixed Convection in a Vertical Channel
Heat Transfer Research, Vol.41, 2010, issue 3
Zoubir Nemouchi, Omar Kholai, Saadoun Boudebous, Mourad Rebay
PITCHFORK BIFURCATION OF THEMIXED CONVECTION IN A VERTICAL CHANNEL
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2009, issue
Zoubir Nemouchi, Omar Kholai, Saadoun Boudebous
The Effect of a Crossed Electromagntic Field on Mixed Convection of a Low Pr Fluid in a Vertical Duct
International Heat Transfer Conference 15, Vol.23, 2014, issue
Praveen Throvagunta, Narendra Gajbhiye, Vinayak Eswaran
A NUMERICAL STUDY ON MIXED CONVECTION OF NON-NEWTONIAN FLUID FLOW IN POROUS CHANNEL WITH AIDING AND OPPOSING NATURAL CONVECTION EFFECTS
Journal of Porous Media, Vol.20, 2017, issue 1
Mir Aydin Khoddam Tabrizi, Reza Gharraei, Sima Baheri Islami
SLIP VELOCITY AND TEMPERATURE JUMP EFFECTS ON CONVECTION FROM A VERTICAL SURFACE EMBEDDED IN SATURATED POROUS MEDIA
Journal of Porous Media, Vol.19, 2016, issue 10
V. M. Al-Khliefat, Hamzeh M. Duwairi