Two-phase nanofluid over rotating disk with exponential variable thickness
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 7 June 2019
Issue publication date: 17 October 2019
Abstract
Purpose
The purpose of this paper is to investigate the effect of nanofluid over rotating disk with the exponential variable thickness
Design/methodology/approach
Using the generalized von Karman transformation, the boundary layer governing equations are transformed into semi-similar forms solved by bvp4c in MATLAB.
Findings
The effects of the thickness parameter a, the shape parameter b, the Brownian motion parameter Nb and thermophoresis parameter Nt on flow, heat and mass transfer are analyzed. With the increase of thickness parameter a, the radial velocity first decreases and then increases, showing the opposite trend on the two sides of the peak value. Moreover, temperature and concentration rise as the Brownian motion parameter Nb becomes larger.
Originality/value
To the best of the authors’ knowledge, this is the first work that has been done on rotating disk with exponential variable thickness in nanofluid. The impact of the two slip effects, namely, Brownian motion and thermophoresis, on the nanofluid boundary layer flow, heat and mass transfer because of rotating disk with exponential variable thickness
Keywords
Acknowledgements
The work of the authors is supported by the National Natural Science Foundations of China (nos. 11772046, 11771040).
Citation
Liu, C., Ding, Y., Zheng, L., Lin, P. and Li, R. (2019), "Two-phase nanofluid over rotating disk with exponential variable thickness", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 10, pp. 3781-3794. https://doi.org/10.1108/HFF-07-2018-0347
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited