期刊
CHINESE JOURNAL OF PHYSICS
卷 56, 期 5, 页码 1853-1871出版社
ELSEVIER
DOI: 10.1016/j.cjph.2018.08.017
关键词
Caputo and Caputo-Fabrizio fractional derivatives; A comparison study; Free convection; Newtonian heating; Vertical plate; Chemical reaction; Constant mass diffusion
资金
- Department of Mathematics, University of Management and Technology Lahore
- BZU, Multan, Pakistan
In this paper we present the natural convection flow of an incompressible viscous fluid subject to Newtonian heating and constant mass diffusion using a recently developed definition of the Caputo-Fabrizio fractional derivative. Boundary layer equations in dimensionless form are obtained by means of dimensionless variables. The expressions for the temperature, concentration and velocity fields are obtained in the Laplace transformed domain. The inverse Laplace transform for the temperature, concentration and velocity field are found numerically by means of Stehfest's and Tzou's algorithms. A comparative analysis has been carried between the Caputo-Fabrizio and the Caputo fractional model obtained by Vieru (2015) through graphical illustration. At the end, we can see the impact of the flow parameters, including the new fractional parameter, on the flow which is presented graphically. As a result, the fractional viscous fluid model with the Caputo-Fabrizio fractional derivative has a higher velocity than with the Caputo.
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