Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 229, Issue -, Pages 67-75Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2016.11.095
Keywords
Fractional calculus; Natural convection; Newtonian heating; Second grade fluid; Exact solutions; Chemical reaction; Mass diffusion
Funding
- University of Management and Technology Lahore, Pakistan
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Natural convection flow of differential type fluid with non-integer order Caputo-fractional derivatives is investigated in this study. The non-dimensional temperature, concentration, and velocity fields are solved by using the Laplace transform method. There is no such result regarding second grade fluid with non-integer order Caputo fractional derivatives established. The obtained solutions are expressed in terms of G-function, Mittage-Leffler function, Robotnov-Hartley and Wright's function. Some known solutions from literature are recovered as a limiting case. Expression for Nusselt and Sherwood numbers with non-integer and integer order, respectively, are also determined. Numerical computations and graphical discussion were made to observe influence of Caputo-time fractional parameter a and second grade parameter alpha(2) on the fluid flow. A comparison for second grade and viscous fluid for non-integer and integer order is also depicted. It is also observed that ordinary fluids have greater velocities than fractional fluids. This shows that how non-integer order fractional parameter affects the fluid flow. (C) 2016 Elsevier S.V. All rights reserved.
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