Journal of Engineering Sciences

Author(s): Govardhan K.¹, Narender G.^2*, Sarma G. S.²

Affiliation(s): 
¹ GITAM University, Hyderabad, India;
² CVR College of Engineering, Hyderabad, India

^*Corresponding Author’s Address: [email protected]

Issue: Volume 6; Issue 2 (2019)

Dates:
Paper received: May 4, 2019
The final version of the paper received: August 26, 2019
Paper accepted online: August 31, 2019

Citation:
Govardhan K., Narender G., Sarma G. S. (2019). Numerical simulation of viscous dissipation and chemical reaction in MHD of Nanofluid. Journal of Engineering Sciences, Vol. 6(2), pp. F15-F23, doi: 10.21272/jes.2019.6(2).f3.

DOI: 10.21272/jes.2019.6(2).f3

Research Area:  CHEMICAL ENGINEERING: Processes in Machines and Devices

Abstract. A study of viscous dissipation and chemical reaction effects of nanofluid flow passing over a stretched surface with the MHD stagnation point and the convective boundary condition has been analyzed numerically. The constitutive equations of the flow model are solved numerically and the impact of physical parameters concerning the flow model on dimensionless velocity, temperature and concentration are presented through graphs and tables. Also, a comparison of the obtained numerical results with the published results of W. Ibrahim has been made and found that both are in excellent agreement. As a result of the research, it was obtained that the magnetic parameter has the same increasing influence on the temperature and the concentration field but opposite on the velocity field, the temperature field, and the concentration field reduce with an increase in the Prandtl number, increase in viscous dissipation increases temperature and concentration profile, and concentration as well as the thickness of concentration decrease by increasing values of chemical reaction parameter.

Keywords: magnetohydrodynamic, stretching sheet, nanofluid, viscous dissipation, chemical reaction.

References:

1. Choi, S. (1995). Enhancing thermal conductivity of fluids with nanoparticles. ASME-Publications-Fed, Vol. 231, pp. 99–106.
2. Buongiorno, J. (2006). Convective transport in nanofluids. Journal of Heat Transfer, Vol. 128(3), pp. 240–250.
3. Kuznetsov, K. V., Nield, D. A. (2010). Natural convective boundary-layer flow of a nanofluid past a vertical plate. International Journal of Thermal Sciences, Vol. 49(2), pp. 243–247.
4. Khan, W. A., Pop, I. (2011). Flow and heat transfer over a continuously moving at plate in a porous medium. Journal of Heat Transfer, Vol. 133(5), art. no. 054501.
5. Makinde, O. D., Khan, W. A., Khan, Z. H. (2013). Buoyancy effects on MHD stagnation point flow and heat transfer of a nanofluid past a convectively heated stretching/shrinking sheet. International Journal of Heat and Mass Transfer, Vol. 62, pp. 526–533.
6. Cortell, R. (2012). Heat transfer in a fluid through a porous medium over a permeable stretching surface with thermal radiation and variable thermal conductivity. The Canadian Journal of Chemical Engineering, Vol. 90(5), pp. 1347–1355.
7. Naramgari, S., Sulochana, C. (2016). Dual solutions of radiative MHD nanofluid flow over an exponentially stretching sheet with heat generation/absorption. Applied Nanoscience, Vol. 6(1), pp. 131–139.
8. Afify, A. A. (2004). MHD free convective flow and mass transfer over a stretching sheet with chemical reaction. Heat and Mass Transfer, Vol. 40(6–7), pp. 495–500.
9. Beg, O. A., Khan, M. D. S., Karim, I., Alam, M. D. M., Ferdows, M. (2014). Explicit numerical study of unsteady hydromagnetic mixed convective nanofluid flow from an exponentially stretching sheet in porous media. Applied Nanoscience, Vol. 4(8), pp. 943–957.
10. Nadeem, S., Haq, R. U. (2014). Effect of thermal radiation for magnetohydrodynamic boundary layer flow of a nanofluid past a stretching sheet with convective boundary conditions. Journal of Computational and Theoretical Nanoscience, 11(1), pp. 32–40.
11. Ibrahim, W., Haq, R. U. (2016). Magnetohydrodynamic (MHD) stagnation point flow of nanofluid past a stretching sheet with convective boundary condition. Journal of the Brazilian Society of Mechanical Sciences and Engineering, Vol. 38(4), pp. 1155–1164.
12. Ishak, A., Nazar, R., Pop, I. (2006). Mixed convection boundary layers in the stagnation point flow toward a stretching vertical sheet. Meccanica, 41(5), pp. 509–518.
13. Mahapatra, T. R., Gupta, A. S. (2002). Heat transfer in stagnation-point flow towards a stretching sheet. Heat and Mass Transfer, 38(6), pp. 517–521.
14. Hayat, T., Mustafa, M., Shehzad, S. A., Obaidat, S. (2012). Melting heat transfer in the stagnation-point flow of an upper convected Maxwell (UCM) fluid past a stretching sheet. International Journal for Numerical Methods in Fluids, Vol. 68, art. no. 233243.

Full Text