scholarly journals Convection Flow of MHD Couple Stress Fluid in Vertical Microchannel with Entropy Generation

2020 ◽  
Author(s):  
Abiodun A. Opanuga ◽  
Olasunmbo O. Agboola ◽  
Hilary I. Okagbue ◽  
Sheila A. Bishop
Keyword(s):  
Entropy Generation ◽  
Couple Stress ◽  
Couple Stress Fluid ◽  
Convection Flow ◽  
Vertical Microchannel

Spectral approach to study the entropy generation of radiative mixed convective couple stress fluid flow over a permeable stretching cylinder

2020 ◽  
pp. 095440622095489
Author(s):  
Nilankush Acharya ◽  
Hiranmoy Mondal ◽  
Prabir Kumar Kundu
Keyword(s):  
Entropy Generation ◽  
Couple Stress ◽  
Magnetic Parameter ◽  
Linearization Method ◽  
Stress Factor ◽  
Couple Stress Fluid ◽  
Bejan Number ◽  
Convective Condition ◽  
Dual Effect ◽  
Flow Features

The present literature illustrates the radiative couple stress fluid runs over a permeable stretched cylinder. The problem has been modelled mathematically introducing the mixed convective condition and magnetic effect. Additionally, the analysis of entropy generation provides the fine points of the flow. The leading PDE equations of the system have been framed non-dimensionally using proper transformation. The resulting ODEs are tackled using by Spectral quasi-linearization method (SQLM). A convergence schematic was obtained graphically. Consequence of various parameters on the flow features has been delivered via graphs and tables. Result signifies that Bejan number declines due to magnetic source. The entropy generation escalates for magnetic parameter, Reynolds number, but couple stress factor discloses the dual effect. The couple stress parameter allows Nusselt number to reduce at the rate 19.05%, whereas heat transport enhances for radiation at the rate 1.67%. Skin friction enhances for couple stress factor at the rate 8.45%.

scholarly journals Soret and dufour effects on free convection flow of a couple stress fluid in a vertical channel with chemical reaction

2013 ◽  
Vol 19 (1) ◽  
pp. 45-55 ◽  
Author(s):  
D. Srinivasacharya ◽  
K. Kaladhar
Keyword(s):  
Differential Equations ◽  
Chemical Reaction ◽  
Couple Stress ◽  
Vertical Channel ◽  
Couple Stress Fluid ◽  
Convection Flow ◽  
Parallel Plates ◽  
Soret And Dufour Effects ◽  
Similarity Transformations ◽  
Dufour Number

The Soret and Dufour effects in the presence of chemical reaction on natural convection heat and mass transfer of a couple stress fluid in a vertical channel formed by two vertical parallel plates is presented. The governing non-linear partial differential equations are transformed into a system of ordinary differential equations using similarity transformations. The resulting equations are then solved using Homotopy Analysis Method (HAM). Profiles of dimensionless velocity, temperature and concentration are shown graphically for various values of Dufour number, Soret number, Couple stress parameter and chemical reaction parameter.

Mixed convection flow of couple stress fluid between rotating discs with chemical reaction and double diffusion effects

2016 ◽  
Vol 5 (4) ◽  
Author(s):  
K. Kaladhar ◽  
D. Srinivasacharya
Keyword(s):  
Chemical Reaction ◽  
Couple Stress ◽  
Double Diffusion ◽  
Couple Stress Fluid ◽  
Convection Flow ◽  
Rotating Disks ◽  
Soret And Dufour Effects ◽  
Rotating Discs ◽  
Diffusion Effects ◽  
Lower Disc

AbstractThe chemical reaction, Soret and Dufour effects on steady flow of a couple stress fluid between two rotating disks are studied. The lower disc is rotating with angular velocity

Sign in / Sign up

Export Citation Format

Share Document