THERMAL SCIENCE

International Scientific Journal

Sami Ullah Khan

,

Nasir Ali

,

Tahir Mushtaq

,

Amar Rauf

,

Sabir Ali Shehzad

NUMERICAL COMPUTATIONS ON FLOW AND HEAT TRANSFER OF CASSON FLUID DUE TO OSCILLATORY MOVING SURFACE

ABSTRACT
A numerical study of unsteady hydromagnetic flow of Casson liquid passed through the oscillatory moving surface is presented. The interaction of radiation term is reported in the energy equation. The flow is generated by the rapid move¬ment of elastic surface that stretched back and forth periodically. The number of variables is reduced by introducing dimensionless variables. An implicit technique developed on finite difference algorithm is implemented to the system of PDE. The impact of various parameters like Casson liquid parameter, the oscillation frequency and stretching rate ratio, Hartmann number and effective Prandtl number are shown through various graphs. The observation indicates that the amplitude of the velocity declines by enhancing Casson liquid parameter, oscillation frequency and stretching rate ratio and Hartmann number. The temperature declines by increasing Casson fluid parameter and effective Prandtl number. The results also indicate that the time-series of local Nusselt number increases by enhancing effective Prandtl number.
KEYWORDS
Casson fluid, oscillatory moving sheet, heat transfer, finite difference technique
PAPER SUBMITTED: 2017-11-30
PAPER REVISED: 2018-02-21
PAPER ACCEPTED: 2018-02-22
PUBLISHED ONLINE: 2018-03-04
DOI REFERENCE: https://doi.org/10.2298/TSCI171130091U
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 6, PAGES [3365 - 3377]
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Numerical computations on flow and heat transfer of Casson fluid due to oscillatory moving surface

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