Eur. Phys. J. Plus (2019) 134: 196
https://doi.org/10.1140/epjp/i2019-12552-y

Regular Article

Nonlinear mixed thermal convective flow over a rotating disk in suspension of magnesium oxide nanoparticles with water and EG

¹ Dept of Mathematics, GITAM School of Technology, Nagadenahalli, Bangalore, Karnataka, India
² Dept of Mathematics, Garden City University, KR Puram, Bangalore, Karnataka, India
³ Dept of Mathematics, Srinivasa Ramanujan Centre, SASRA University, Tanjavur, Tamilnadu, India
⁴ Faculty of Mathematics and Statistics, Ton Duc Thang University, 92715, Ho Chi Minh City, Vietnam

^* e-mail: ilyaskhan@tdtu.edu.vn

Received: 16 July 2018
Accepted: 3 February 2019
Published online: 10 May 2019

Abstract

The present study proclaims the importance of magnesium oxide nanoparticles in non-linear convective boundary flow over a radiated rotating disk with stretching in the radial direction. The flow governing equations are simplified to coupled non-linear ordinary differential equations (ODEs) by endeavoring von Karman transformations. The solution for the resulting system is obtained numerically by the help of Runge-Kutta and Newton’s methods. The validity of the obtained numerical outcome is ensured by comparing with the existing literature as special cases. The comparative plots are provided for magnesium oxide+water and magnesium oxide+ethylene glycol nanofluid. Few of the several significant findings of the current study are: i) The time taken for execution is more in magnesium oxide with ethylene glycol mixture compared to magnesium oxide+water for all the considered non-dimensional parameters. This may be due to the ethylene glycol nanofluid is not amalgamated with magnesium oxide nanofluid properly when compared to water. ii) The nonlinear convection parameter have higher heat transfer rate in ethylene glycol based magnesium oxide mixture when compared to water based magnesium oxide mixture due to nonlinear thermal variation in the flow.