Effects of Thermal Radiation on Peristaltic Flow of Nanofluid in a Channel with Joule Heating and Hall Current

2019 ◽  
pp. 301-311 ◽  
Author(s):  
R. Latha ◽  
B. Rushi Kumar
Keyword(s):  
Thermal Radiation ◽  
Joule Heating ◽  
Hall Current ◽  
Peristaltic Flow

Discussion on the Paper “Combined Effects of Thermal Radiation and Magnetohydrodynamic on Peristaltic Flow of Nanofluids: Applications to Radiotherapy and Thermotherapy of Cancer” by Wahed Hasona et al.

2020 ◽  
Vol 16 ◽  
Author(s):  
M. A. Elogail
Keyword(s):  
Magnetic Field ◽  
Brownian Motion ◽  
Thermal Radiation ◽  
Joule Heating ◽  
Peristaltic Flow ◽  
Combined Effects ◽  
Asymmetric Channel ◽  
Soret And Dufour Effects ◽  
Carreau Nanofluid ◽  
Insight Into

Recently, Hasona et al. [1] aimed to investigate the influence of thermal radiation and magnetic field on the peristaltic flow of Carreau nanofluid in a vertical asymmetric channel. The authors have considered the Joule heating, viscous dissipation, chemical reaction, Brownian motion, thermophoresis, Soret, and Dufour effects in their study. Several mistakes and typos were discovered in the study mentioned above, which would affect the obtained results. This report outlines some of these mistakes with suggested corrections to attract the readers' attention through a more in-depth insight into analyzing and exposing these defects.

scholarly journals Insight into the Significance of Hall Current and Joule Heating on the Dynamics of Darcy–Forchheimer Peristaltic Flow of Rabinowitsch Fluid

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Ji-Huan He ◽  
Doaa R. Mostapha
Keyword(s):  
Mass Transfer ◽  
Joule Heating ◽  
Hall Current ◽  
Numerical Study ◽  
Peristaltic Flow ◽  
Peristaltic Transport ◽  
Physical Parameters ◽  
Maximum Height ◽  
Mean Flow ◽  
Mild Stenosis

This paper aims to present the significance of the Hall current and Joule heating impacts on a peristaltic flow of a Rabinowitsch fluid through tapered tube. The Darcy–Forchheimer scheme is used for a porous medium; a mild stenosis is considered to study the impacts of radiative heat transfer and chemical reactions. Convective conditions are postulated for heat and mass transfer. In the meantime, the slip conditions are presumed for the velocity distribution. Soret and Dufour features bring the coupled differential systems. The hypotheses of a long wavelength and low Reynolds number are employed to approximate the governing equations of motion, and finally the homotopy perturbation method is adopted for numerical study. Pumping characteristics are revealed and the trapping procedure correlated with peristaltic transport is elucidated. The present study is very important in many medical applications, such as the gastric juice motion in the small intestine and the flow of blood in arteries. The mechanism of peristaltic transport with mild stenosis has been exploited for industrial applications like sanitary fluid transport and blood pumps in heart-lung machine. The influences of various physical parameters of the problem are debated and graphically drawn across a set of figures. It is noted that the axial velocity is reduced with the increase of the Hartmann number. However, enhancing both the Rabinowitsch parameter and the Forchheimer parameter gives rise to the fluid velocity. As well, it is debated that Rabinowitsch fluid produces a cubic term of pressure gradient. Therefore, the relation between mean flow rate and the pressure rise does not stay linear. It is recognized that the temperature rises with the enhancement of both Dufour number and Soret number. Furthermore, it is illustrated that the concentration impedes with the increase of the mass transfer Biot number. Also, it is revealed that the trapped bolus contracts in size by enlarging the maximum height of stenosis.

scholarly journals Hall current and joule heating effects on free convection flow of a nanofluid over a vertical cone in presence of thermal radiation

2017 ◽  
Vol 21 (6 Part A) ◽  
pp. 2609-2620 ◽  
Author(s):  
Wael Abbas ◽  
Emad Sayed
Keyword(s):  
Thermal Radiation ◽  
Joule Heating ◽  
Volume Fraction ◽  
Hall Current ◽  
Flow Behavior ◽  
Nanoparticle Volume Fraction ◽  
Vertical Cone ◽  
Local Skin ◽  
Special Cases ◽  
Non Linear

The effects of Hall current and Joule heating on flow and heat transfer of a nanofluid along a vertical cone in the presence of thermal radiation is considered. The flow is subjected to a uniform strong transverse magnetic field normal to the cone surface. Similarity transformations are used to convert the non-linear boundary- layer equations for momentum and energy equations to a system of non-linear ordinary differential equations which are then solved numerically with appropriate boundary conditions. The solutions are presented in terms of local skin friction, local Nusselt number, velocity, and temperature profiles for values of magnetic parameter, Hall parameter, Eckert number, radiation parameter, and nanoparticle volume fraction. Comparison of the numerical results made with previously published results under the special cases, the results are found to be in an excellent agreement. It is also found that, nanoparticle volume fraction parameter and types of nanofluid play an important role to significantly determine the flow behavior.

scholarly journals Effect of Joule Heating and Thermal Radiation in Flow of Third Grade Fluid over Radiative Surface

PLoS ONE ◽  
2014 ◽  
Vol 9 (1) ◽  
pp. e83153 ◽  
Author(s):  
Tasawar Hayat ◽  
Anum Shafiq ◽  
Ahmed Alsaedi
Keyword(s):  
Thermal Radiation ◽  
Joule Heating ◽  
Third Grade ◽  
Third Grade Fluid ◽  
Grade Fluid

scholarly journals Entropy Generation of MHD Poiseuille Flow with Hall and Joule Heating Effects

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Entropy Generation ◽  
Joule Heating ◽  
Poiseuille Flow ◽  
Hall Current ◽  
Coupled System ◽  
Bejan Number ◽  
Electrically Conducting ◽  
Heating Effects ◽  
Adomian Decomposition ◽  
Ion Slip

In this article investigation has been conducted on the effects of Hall parameter, rotation parameter and Joule heating on the entropy generation of fully developed electrically conducting Poiseuille flow. The coupled system of ordinary differential equations for the flow are obtained, non-dimensionalised and solutions are constructed by Adomian decomposition technique. The effects of Hall current, Ion-slip, Joule heating and magnetic parameters on the velocity, temperature, entropy generation and Bejan number are explained and shown graphically. The results indicate that fluid entropy generation is induced by increase in Hall current, rotation and Joule heating parameters. Furthermore Bejan number is accelerated by Hall current, rotation, Magnetic and Joule heating parameters which signifies that heat transfer irreversibility dominates entropy generation.

scholarly journals Computational analysis of nano-fluid due to a non-linear variable thicked stretching sheet subjected to Joule heating and thermal radiation

2020 ◽  
Vol 9 (5) ◽  
pp. 11035-11044 ◽  
Author(s):  
Zahra Abdelmalek ◽  
Imad Khan ◽  
M. Waleed Ahmed Khan ◽  
Khalil Ur Rehman ◽  
El-Sayed M. Sherif
Keyword(s):  
Thermal Radiation ◽  
Joule Heating ◽  
Computational Analysis ◽  
Stretching Sheet ◽  
Nano Fluid ◽  
Non Linear
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