Influence of nanoparticle shapes on natural convection flow with heat
and mass transfer rates of fractional nanofluids
Abstract
This article presents an investigation on free convection flow and heat
and mass transfer of fractional nanofluids formed by different base
fluids with different shaped copper nanoparticles past an infinite
vertical plate with radiation effect. The model which describes the
system involving partial differential equations is converted into model
of fractional nanofluids using Caputo time derivatives, which explains
the impact of memory on behavior of nanofluids and are solved by
employing technique of Laplace transform. The different base fluids -
water $(H_2 O)$, $SA$:sodium alginate $(C_{6}H_{9}Na
O_{7})$ and $EG$:ethylene glycol $(C_{2}H_{6}O_{2})$
and various shapes of nanoparticles - blade, brick, platelet and
cylinder are considered for the study. The exact solutions are obtained
for the temperature, concentration and velocity distributions and the
respective Nusselt number, Sherwood number and skin-friction
coefficient. The influence of non-dimensional parameters like fractional
parameter, Schmidt number, radiation parameter, nanoparticle volume
fraction, etc., which provides physical interpretations of temperature,
concentration and velocity fields, Nusselt number, Sherwood number and
skin-friction are discussed in detail with the aid of graphical
representations. From the results it is found that fractional nanofluids
formed by water based blade shaped nanoparticle exhibits more velocity
and temperature distributions. Also, strengthen of fluid flow,
temperature and concentration of nanofluids are inversely correlate with
the order of fractional derivatives.