Fluid flow and heat transfer of non-Newtonian nanofluid in a microtube considering slip velocity and temperature jump boundary conditions

2017 ◽  
Vol 61 ◽  
pp. 25-32 ◽  
Author(s):  
Seyed Ali Sajadifar ◽  
Arash Karimipour ◽  
Davood Toghraie
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Boundary Conditions ◽  
Slip Velocity ◽  
Temperature Jump ◽  
Flow And Heat Transfer

Computational Modeling of the Effects of Viscous Dissipation on Polymer Melt Flow Behavior During Injection Molding Process in Plane Channels

2013 ◽  
Vol 135 (1) ◽  
Author(s):  
M. Tutar ◽  
A. Karakus
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Boundary Conditions ◽  
Viscous Dissipation ◽  
Plane Channel ◽  
Polymer Melt ◽  
Viscous Heating ◽  
Melt Flow ◽  
Flow And Heat Transfer ◽  
Volume Method

The present finite volume method based fluid flow solutions investigate the boundary-layer flow and heat transfer characteristics of polymer melt flow in a rectangular plane channel in the presence of the effect of viscous dissipation and heat transfer by considering the viscosity and density variations in the flow. For different inflow velocity boundary conditions and the injection polymer melt temperatures, the viscous dissipation effects on the velocity and temperature distributions are studied extensively to analyze the degree of interactions of thermal flow field dominated by the viscous heating and momentum diffusion mechanism with varying boundary conditions. The modified forms of Cross constitutive equation and Tait equation of state are adopted for the representation of viscosity variations and density change, respectively, in the polymer melt flow. These models together with the viscous dissipation terms are successfully incorporated into the finite volume method based fluid flow solutions to realistically represent the heat effects in the plane channel. The numerical results presented for two different commercial polymer melt flows, namely, polymer Polyacetal POM-M90-44 and polypropylene (PP), demonstrate that proposed mathematical formulations for viscosity and density variations including viscous heating terms into the energy equations, which are fully coupled with momentum equations, lead to more accurate representation of the fluid flow and heat transfer phenomena for the polymer melt flows in plane channels.

A Parametric Numerical Study of Fluid Flow and Heat Transfer in a Computer Chassis

2015 ◽  
Vol 9 (3) ◽  
pp. 242 ◽  
Author(s):  
Efstathios Kaloudis ◽  
Dimitris Siachos ◽  
Konstantinos Stefanos Nikas
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Numerical Study ◽  
Flow And Heat Transfer
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