Shalini Jain

Radiation Effect on MHD Williamson Fluid Flow over Stretching Cylinder Through Porous Medium with Heat Source

In this present paper, we have investigated radiation effects on MHD Williamson fluid flow past a stretching cylinder through porous medium. MHD with Hall and ion-slip currents impact is taken into consideration. The governing PDEs are transformed into BVPs by using appropriate transformations. Shooting technique with Runge–Kutta forth-order method is used to find the solution of the problem. The effect of various parameters such as curvature parameter \(\gamma\), heat generation parameter \(\beta\), Hall current parameter \(\beta_{e}\), ion-slip parameter \(\beta_{i}\) magnetic parameter M, thermal conductivity \(\varepsilon\), Weissenberg number \(\lambda\), Eckert number Ec, radiation parameter K and Prandtl number Pr on momentum and thermal energy profiles are discussed and displayed graphically. Local Nusselt number and skin friction coefficient are tabulated.

Hall Current and Radiation Effects on Unsteady MHD Squeezing Nanofluid Flow in a Rotating Channel with Lower Stretching Permeable Wall

In analysis of present model, we have analyzed the Hall current and radiative effects on unsteady MHD squeezing nanofluid in a rotating channel. The lower wall is permeable and linearly stretching, and the upper wall is squeezing downward in the presence of MHD. By introducing similarity transformation, we get the ordinary coupled differential equation. The transformed nonlinearly coupled differential equations are solved numerically by bvp4c solver using software MATLAB. We have taken nanoparticles of copper (Cu) and alumina (Al2O3) as base fluid (water). The effect of different parameters such as magnetic field parameter M, squeezing parameter Sq, rotational parameter ω, suction parameter w 0, nanofraction parameter ϕ, hall current parameter β e , radiation parameter N on velocity profile, and temperature profile is displayed through tables and graphs.

Radiation Effects in Flow through Porous Medium over a Rotating Disk with Variable Fluid Properties

The present study investigates the radiation effects in flow through porous medium over a permeable rotating disk with velocity slip and temperature jump. Fluid properties density , viscosity , and thermal conductivity are taken to be dependent on temperature. Particular case considering these fluid properties’ constant is also discussed. The governing partial differential equations are converted into nonlinear normal differential equation using similarity alterations. Transformed system of equations is solved numerically by using Runge-Kutta method with shooting technique. Effects of various parameters such as porosity parameter , suction parameter , rotational Reynolds number Re, Knudsen number Kn, Prandtl number Pr, radiation parameter , and relative temperature difference parameter on velocity profiles along radial, tangential, and axial direction and temperature distribution are investigated for both variable fluid properties and constant fluid properties. Results obtained are analyzed and depicted through graphs and table.