scholarly journals THE SIMULTANEOUS EFFECT OF ECKERT NUMBER AND MAGNETIC PRANDTL NUMBER ON CASSON FLUID FLOW

2021 ◽  
Vol 16 ◽  
Author(s):  
Silpisikha Goswami ◽  
Dipak Sarma
Keyword(s):  
Fluid Flow ◽  
Prandtl Number ◽  
Casson Fluid ◽  
Eckert Number ◽  
Simultaneous Effect ◽  
Magnetic Prandtl Number

Effect of Prandtl Number for Casson Fluid Flow Over a Vertical Cylinder: Heatline Approach

2018 ◽  
Vol 4 (3) ◽  
Author(s):  
G. Janardhana Reddy ◽  
Bhaskerreddy Kethireddy ◽  
Mahesh Kumar ◽  
H. P. Rani ◽  
Rama Subba Reddy Gorla
Keyword(s):  
Fluid Flow ◽  
Prandtl Number ◽  
Vertical Cylinder ◽  
Casson Fluid

Free convection in a square cavity filled with a Casson fluid under the effects of thermal radiation and viscous dissipation

2017 ◽  
Vol 27 (10) ◽  
pp. 2318-2332 ◽  
Author(s):  
Ioan Pop ◽  
Mikhail Sheremet
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Free Convection ◽  
Thermal Radiation ◽  
Viscous Dissipation ◽  
Vertical Wall ◽  
Casson Fluid ◽  
Eckert Number ◽  
Square Cavity ◽  
Content Type

Purpose The main purpose of this numerical work is to study free convection of Casson fluid in a square differentially heated cavity taking into account the effects of thermal radiation and viscous dissipation. Design/methodology/approach The cavity is heated from the left vertical wall and cooled from the right vertical wall while horizontal walls are insulated. The governing partial differential equations invoking Rosseland approximation for thermal radiation with corresponding boundary conditions have been solved by finite difference method of the second-order accuracy using dimensionless variables stream function, vorticity and temperature. The governing parameters are Rayleigh number (Ra = 105), Prandtl number (Pr = 0.1, 0.7, 7.0), Casson parameter (γ = 0.1-5.0), radiation parameter (Rd = 0-10), Eckert number (Ec = 0-1.0). Findings It is found that an increase in Casson parameter leads to the heat transfer enhancement and fluid flow intensification. While a growth of Eckert number illustrates the heat transfer suppression. Originality/value The originality of this work is to analyze for the first-time natural convective fluid flow and heat transfer of a Casson fluid within a differentially heated square cavity under the effects of thermal radiation and viscous dissipation. The results would benefit scientists and engineers to become familiar with the flow behavior of such non-Newtonian fluids, and the way to predict the properties of this flow for possibility of using this specific fluid in various engineering and industrial processes, such as chyme movement in intestine, blood flows, lubrication processes with grease and heavy oils, glass blowing, electronic chips, food stuff, slurries, etc.

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