Abstract
This comparative research investigates the influence of a flexible magnetic flux and a chemical change on the freely fluid motion of a (MHD) magneto hydrodynamic boundary layer incompressible nanofluid across an exponentially expanding sheet. Water and ethanol are used for this analysis. The temperature transmission improvement of fluids is described using the Buongiorno model, which includes Brownian movement and thermophoretic distribution. The nonlinear partial differential equalities governing the boundary layer were changed to a set of standard nonlinear differential equalities utilizing certain appropriate similarity transformations. The bvp4c algorithm is then used to tackle the transformed equations numerically. Fluid motion is slowed by the magnetic field, but it is sped up by thermal and mass buoyancy forces and thermophoretic distribution increases non-dimensional fluid temperature resulting in higher temperature and thicker boundary layers. Temperature and concentration, on the other hand, have the same trend in terms of the concentration exponent, Brownian motion constraint, and chemical reaction constraint. Furthermore, The occurrence of a magnetic field, which is aided by thermal and mass buoyancies, assists in the enhancement of heat transmission and wall shear stress, whereas a smaller concentration boundary layer is produced by a first-order chemical reaction and a lower Schmidt number.
Highlights
The learning of flow and temperature transmission across a stretched surface has piqued the interest of many investigators over the past few decades due to its various important engineering applications
B0 is a consistent magnetic field, ρf is the density of the fluid, αf is the temperature distribution of fluid, τ is a proportion between effective heat capacitance of nanoparticle material and heat capability of fluid, DB is Brownian movement constant, DT is thermophoretic distribution constant, Kc is chemical reaction constraint, U0, V0, Uw, Vw are fixed velocities, L is locus length, Tw is the temperature at the surface and Cw is nanoparticle concentration over the surface of the sheet
Graphs and tables have been used to examine the impact of a changing magnetic strength and a chemical reaction on the free convection movement of an electrically conducting having constant density nano liquid above an exponential expandable surface
Summary
The learning of flow and temperature transmission across a stretched surface has piqued the interest of many investigators over the past few decades due to its various important engineering applications. Many researchers [15,16,17,18,19,20] have investigated the nanofluid with MHD movement and temperature transmission possessions in different physical problems until now. This is owing to important uses in industrial processes, such as its wide variety of biological applications, including wound therapy and sterilization. The stimulus of chemical processes on MHD immobility point movement of water-based in a permeable medium driven by heat radiation and viscid intemperance was studied by Mabood et al [26] They discovered that increasing the chemical reaction constraint improves the non-dimensional combination profiles of water-based nanofluids in their research. The effects of velocity streamlines, nondimensional concentration, temperature and velocity profiles of nanoparticles, alongside the skin resistance, Nusselt and Sherwood numbers, are explored and illustrated in graphs, and tables
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