Mixed convection in a rotating eccentric annulus containing nanofluid using bi-orthogonal grid types: A finite volume simulation

2017 ◽  
Vol 227 ◽  
pp. 114-126 ◽  
Author(s):  
Hamid Teimouri ◽  
Ghanbar Ali Sheikhzadeh ◽  
Masoud Afrand ◽  
Mohammad Mahdi Fakhari
Keyword(s):  
Mixed Convection ◽  
Finite Volume ◽  
Eccentric Annulus ◽  
Orthogonal Grid ◽  
Finite Volume Simulation

Multiobjective Optimization of a Four-Step Adsorption Process for Postcombustion CO2Capture Via Finite Volume Simulation

2013 ◽  
Vol 52 (11) ◽  
pp. 4249-4265 ◽  
Author(s):  
Reza Haghpanah ◽  
Aniruddha Majumder ◽  
Ricky Nilam ◽  
Arvind Rajendran ◽  
Shamsuzzaman Farooq ◽  
...  
Keyword(s):  
Multiobjective Optimization ◽  
Finite Volume ◽  
Adsorption Process ◽  
Finite Volume Simulation

scholarly journals Improved Energy Efficiency of Mixed Convection Heating Process in Eccentric Annulus

2021 ◽  
Vol 13 (8) ◽  
pp. 168781402110391
Author(s):  
Ben Abdelmlek Khaoula ◽  
Ben Nejma Fayçal
Keyword(s):  
Heat Transfer ◽  
Energy Efficiency ◽  
Rayleigh Number ◽  
Mixed Convection ◽  
Heat Transfer Rate ◽  
Transfer Rate ◽  
Rotation Speed ◽  
Numerical Study ◽  
Heating Process ◽  
Eccentric Annulus

This paper deals with a numerical study of mixed convection heat transfer in horizontal eccentric annulus. The inner cylinder is supposed hot and rotating, however the outer one is kept cold and motionless. The numerical problem was solved using COMSOL Multiphysics® which is based on finite element method. The resolution of the partial differential equations was conducted through an implicit scheme with the use of the damped Newton’s method. The present numerical analysis concerns the effect of eccentricity, rotation speed and Rayleigh number on the flow patterns, heat transfer rate, and energy efficiency of the process. It was found that the heat transfer rate increases with the increase of Rayleigh number. In addition, the heat transfer rate drops with the increase of rotation speed. Finally, we have demonstrated that maximum energy efficiency is achieved not only with higher Rayleigh number but also it is maximum with small eccentricity.

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