Combined effect of variable fluid properties on nonisothermal flow of an inelastic fluid with viscous heating

Pinarbasi, A.; Toros, E.; Imal, M.

doi:10.1016/j.icheatmasstransfer.2008.11.004

Combined effect of variable fluid properties on nonisothermal flow of an inelastic fluid with viscous heating

Atıf İçin Kopyala

Pinarbasi A., Toros E., Imal M.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, cilt.36, sa.3, ss.280-285, 2009 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 36 Sayı: 3
Basım Tarihi: 2009
Doi Numarası: 10.1016/j.icheatmasstransfer.2008.11.004
Dergi Adı: INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.280-285
Çukurova Üniversitesi Adresli: Evet

Özet

This study investigates the effect of variable thermal conductivity and variable viscosity on the flow characteristics and flow rates of an inelastic fluid, including viscous heating terms in the analysis. The exponential dependence of viscosity on temperature is modeled through Arrhenius law and shear rate dependence is modeled through Carreau rheological equation while it is assumed that the thermal conductivity varies linearly with temperature. Flow governing motion and energy balance equations are coupled and the solution is found iteratively facilitating a pseudospectral method based on the Chebyshev polynomial expansions. Effect of variable thermal conductivity and viscosity as well as the effect of power law index, material time constant, Brinkman and Peclet numbers on the velocity and temperature profiles are presented. Influence of the above parameters on the flow rate is also calculated. (C) 2008 Elsevier Ltd. All rights reserved.