Universal Journal of Applied Science Vol. 5(3), pp. 17 - 25
DOI: 10.13189/ujas.2017.050301
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Effects of Elasticity Number on the Heated Flow of Viscoelastic Fluid inside Planar Channel with a Symmetric Abrupt Expansion


Amin Shahbani Zahiri 1, Hassan Hassanzadeh 1, Mohammad Mohsen Shahmardan 2,*, Mahmood Norouzi 2
1 Department of Mechanical Engineering, University of Birjand, Iran
2 Department of Mechanical Engineering, Shahrood University of Technology, Iran

ABSTRACT

In this work, we have numerically studied the heat transfer of viscoelastic fluid flow inside a planar channel with 1:3 abrupt expansion. For modeling rheological behavior of non-creeping flow related to the viscoelastic fluid which includes both the effects of shear-thinning and elasticity, the constitutive equation of exponential Phan Thien-Tanner (EPTT) is used. Also, thermal boundary condition of constant temperature at the walls and inlet of channel with internal heat generated by the viscous dissipation are considered. Because of high temperature differences in the current study, the fluid properties such as fluid viscosity, relaxation time, specific heat capacity and thermal conductivity have a function of temperature. For coupling the variables of velocity, pressure and temperature, the PISO algorithm is employed and finite volume method (FVM) imposed on the collocated grid to discretize the governing equations. The main propose of the present study is to examine the effects of elastic property on the size of recirculation regions, temperature distribution, local and mean Nusselt numbers.

KEYWORDS
Abrupt Expansion, Recirculation Region, Nusselt Number, Elasticity Number

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Amin Shahbani Zahiri , Hassan Hassanzadeh , Mohammad Mohsen Shahmardan , Mahmood Norouzi , "Effects of Elasticity Number on the Heated Flow of Viscoelastic Fluid inside Planar Channel with a Symmetric Abrupt Expansion," Universal Journal of Applied Science, Vol. 5, No. 3, pp. 17 - 25, 2017. DOI: 10.13189/ujas.2017.050301.

(b). APA Format:
Amin Shahbani Zahiri , Hassan Hassanzadeh , Mohammad Mohsen Shahmardan , Mahmood Norouzi (2017). Effects of Elasticity Number on the Heated Flow of Viscoelastic Fluid inside Planar Channel with a Symmetric Abrupt Expansion. Universal Journal of Applied Science, 5(3), 17 - 25. DOI: 10.13189/ujas.2017.050301.