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논문 기본 정보

자료유형
학술저널
저자정보
A. Ahmad (COMSATS Institute of Information Technology) S. Ahmed (COMSATS Institute of Information Technology) F. M. Abbasi (COMSATS Institute of Information Technology)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.22 No.2
발행연도
2017.6
수록면
181 - 187 (7page)
DOI
10.4283/JMAG.2017.22.2.181

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초록· 키워드

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Flow of electrically conducting nanofluids is of pivotal importance in countless industrial and medical appliances. Fluctuations in thermophysical properties of such fluids due to variations in temperature have not received due attention in the available literature. Present investigation aims to fill this void by analyzing the flow of copper-water nanofluid with temperature dependent viscosity past a Riga plate. Strong wall suction and viscous dissipation have also been taken into account. Numerical solutions for the resulting nonlinear system have been obtained. Results are presented in the graphical and tabular format in order to facilitate the physical analysis. An estimated expression for skin friction coefficient and Nusselt number are obtained by performing linear regression on numerical data for embedded parameters. Results indicate that the temperature dependent viscosity alters the velocity as well as the temperature of the nanofluid and is of considerable importance in the processes where high accuracy is desired. Addition of copper nanoparticles makes the momentum boundary layer thinner whereas viscosity parameter does not affect the boundary layer thickness. Moreover, the regression expressions indicate that magnitude of rate of change in effective skin friction coefficient and Nusselt number with respect to nanoparticles volume fraction is prominent when compared with the rate of change with variable viscosity parameter and modified Hartmann number.

목차

1. Introduction
2. Mathematical Formulation
3. Solution Methodology
4. Results and Discussion
5. Concluding Remarks
References

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