Impact of Velocity Index and Significance of Nanofluid Flow of Magnetohydrodynamics (MHD) over a Stretching-Porous Sheet with Dufour and Ohmic Heating Effects

Abstract

This paper “impact of velocity index and significance of nanofluid flow of
magnetohydrodynamics (MHD) over a stretching-porous sheet with dufour and
Ohmic Heating Effects” is aimed at analysing the effect of velocity index with
dufour and ohmic heating parameter on the flow of nanofluid. Also, it examines
the significant effect of nanofluid thermophysical properties on fluid flow. Velocity
index of fluid flow is referred to as the ratio of the actual velocity of the fluid at a
specific point to the average velocity. With this in view, the effect of velocity index
is examined on the fluid flow. The nanofluid under consideration is the copper (Cu)
with base fluid as water (H2O). The partial differential equations governing the
nanofluid flow are transformed with the use stream functions and similarity
variables. The transform equation is solved numerically using MAPPLE for
various values of the controlling parameters of the flow. The results are presented
in graphs and tables. Based on the observations, it is worth noting that the presence
of the velocity index parameter (m) leads to the increase in the velocity of the fluid
flow and the nanofluid thermophysical properties inculcated into the flow shows a
significant effect on the flow of fluid. It is also worth noting that the increase in the
buoyancy due to temperature (Gt) causes the temperature to increases at the wall
and decreases along the free stream.