Now showing 1 - 2 of 2
  • Publication
    Radiative Mixed Convection Flow Over a Moving Needle Saturated with Non-Isothermal Hybrid Nanofluid
    ( 2021-12-01)
    Jahan S.
    ;
    Ferdows M.
    ;
    Shamshuddin M.
    ;
    A steady incompressible boundary layer flow and heat transfer past on a moving thin needle saturated with hybrid nanofluid are investigated with the effects of solar radiation and viscous dissipation. The simulation is also influenced by the effects of thermophoresis and Brownian motion. We consider (Al2O3-Cu-water) as a hybrid nanofluid, where water is the base fluid and alumina and copper are the hybrid nanoparticles. By utilizing the technique of similarity transformations, we transformed the dimensional partial differential equations into dimensionless ordinary differential equations. Using the MAPLE software scheme, the transformed equations have been solved numerically. The graphical representation of different parameters including Mixed convection, Power-law exponent, Buoyancy ratio parameter, Eckert number are illustrated on velocity, temperature, the concentration of nanoparticles profiles and explained in detail. Skin friction coefficient, heat transfer rate, and mass transfer rate are also obtained numerically. With the presence of hybrid nanoparticles, the heat transfer rate is higher in all cases. In the temperature profile, we observed a reduction with the increasing values of the mixed convection parameter. It also revealed that greater values of volume fraction of nanoparticle (Cu) reduce the mass transfer rate but accelerates the heat transfer rate.
  • Publication
    Effects of Solar Radiation and Viscous Dissipation on Mixed Convective Non-Isothermal Hybrid Nanofluid over Moving Thin Needle
    ( 2021-03-01)
    Jahan S.
    ;
    Ferdows M.
    ;
    Shamshuddin M.D.
    ;
    The article is to examine the simulations influence of exponential solar radiation and dissipative transport of steady mixed convective hybrid nanofluid flow regime for an incompressible fluid in the boundary layer limit past a non-isothermal moving thin needle. We solved the system of ordinary differential equations obtained by choosing appropriate non-dimensional variables using the MAPLE software scheme. We have discussed the flow behaviours and all physical quantities of interest like skin friction cofactor, rate of heat transfer and rate of mass transfer as a function of similarity variables and governing parameters. Our numerically calculated solutions are given with similar studies. For instance, the entrance of several parameters like mixed convection, Power Law constant, buoyancy ratio parameter, Eckert number are illustrated graphically on velocity, temperature and nanoparticle concentration profiles. We observed that, the rate of heat transfer is higher in all cases but the reduction of mass transfer rate has been noticed.