HYDROMAGNETIC HYBRID NANOFLUID FLOW AND MASS TRANSFER FROM A STRETCHING
SURFACE IN POROUS MEDIA WITH NAVIER SLIP AND CHEMICAL REACTION EFFECTS
Abstract
Hybrid nanofluids (HNFs) comprise combinations of different
nanoparticles suspended in base fluids. Applications of such nanofluids
are growing in the areas of energy and biomedical engineering including
smart (functional) coatings. Motivated by these developments, the
present article examines theoretically the magnetohydrodynamic (MHD)
coating boundary layer flow of HNFs from a stretching surface under a
transverse magnetic field in porous media with chemically reactive
nanoparticles. Darcy’s law is deployed. Both first and second order
momentum slip is included as is solutal slip. The transformed boundary
value problem is solved analytically. Closed form solutions for velocity
are derived in terms of exponential functions and for the concentration
field in terms of incomplete Gamma functions by the application of the
Laplace transformation technique.The influence of selected parameters
e.g. suction/injection, magnetic field and slip parameterson velocity
and concentration distributions are visualized graphically.
Concentration magnitudes are elevated with stronger magnetic field
whereas they are suppressed with greater wall solutal slip. Magnetic
field suppresses velocity and increases hydrodynamic boundary layer
thickness. The flow is accelerated with reduction in inverse Darcy
number and stronger suction leads to a decrease in skin friction. The
analysis provides a good foundation for further investigations using
numerical methods.