Effect of surface radiation on conjugate natural convection in a horizontal annulus driven by inner heat generating solid cylinder


Autoria(s): Shaija, A; Narasimham, GSVL
Data(s)

01/12/2009

Resumo

This paper reports a numerical study of the laminar conjugate natural convection heat transfer with and without the interaction of the surface radiation in a horizontal cylindrical annulus formed between an inner heat generating solid circular cylinder and an outer isothermal circular boundary. Numerical solutions are obtained by solving the governing equations with a pressure correction method on a collocated (non-staggered) mesh. Steady-state results are presented for the flow and temperature distributions and Nusselt numbers for the heat generation based Grashof number ranging from 10(7) to 10(10), solid-to-fluid thermal conductivity ratios of 1, 5, 10, 50 and 100, radius ratios of 0.226 and 0.452 and surface emissivities of 0-0.8 with air as the working medium. It is observed that surface radiation reduces the convective heat transfer in the annulus compared to the pure natural convection case and enhances the overall Nusselt number.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/25063/1/6.pdf

Shaija, A and Narasimham, GSVL (2009) Effect of surface radiation on conjugate natural convection in a horizontal annulus driven by inner heat generating solid cylinder. In: International Journal of Heat and Mass Transfer, 52 (25-26). pp. 5759-5769.

Publicador

Elsevier Science

Relação

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V3H-4X62S8K-2&_user=512776&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000025298&_version=1&_urlVersion=0&_userid=512776&md5=fe2518381c150931baf0ebf428bc6a49

http://eprints.iisc.ernet.in/25063/

Palavras-Chave #Mechanical Engineering
Tipo

Journal Article

PeerReviewed