Impact of Soret and Dufour Numbers on MHD Casson Fluid Flow Past an Exponentially Stretching Sheet with Non-Uniform Heat Source/Sink

Abstract:

Present study deals with the impact of cross diffusion on Casson fluid flow in the presence of Lorentz force. Flow is caused by the exponential stretching of surface in two lateral directions. The influence of space dependent varying heat sink/source is also contemplated. The basic governing equations are first converted into system of ODEs and then solved using an efficient numerical procedure namely R.K. based shooting technique. From the solution we found that flow is affected by some physical parameters like Casson parameter, non uniform heat parameters, Soret and Dufour numbers etc. Hence the impact of such parameters on velocity, temperature and concentration profiles is shown via plots. Further the friction factor, local Nusselt and Sherwood numbers are also calculated and given in tables. Results indicate that an increase in the Casson parameter enhances the temperature and concentration fields. Dufour and Soret numbers have tendency to enhance temperature and concentration fields respectively.

• Periodical: Defect and Diffusion Forum (Volume 388)
• Pages: 14-27
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.388.14
• Online since: October 2018
• Authors: Janke Venkata Ramana Reddy, Vangala Sugunamma*, N. Sandeep
• Keywords: Casson Fluid, Cross Diffusion Effects, Magnetohydrodynamic (MHD), Stretching Sheet, Thermal Radiation, Varying Heat Source/Sink

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