• MEHREEN KANWAL

      Articles written in Pramana – Journal of Physics

    • Entropy generation optimisation in the nanofluid flow of a second grade fluid with nonlinear thermal radiation

      TASAWAR HAYAT MEHREEN KANWAL SUMAIRA QAYYUM M IJAZ KHAN AHMED ALSAEDI

      More Details Abstract Fulltext PDF

      The flow of a second grade fluid by a rotating stretched disk is considered. Brownian motion and thermophoresis characterise the nanofluid. Entropy generation in the presence of heat generation/absorption, Joule heating and nonlinear thermal radiation is discussed. Homotopic convergent solutions are developed. The behaviour of velocities (radial, axial, tangential), temperature, entropy generation, Bejan number, Nusselt number, skin friction and concentration is evaluated. The radial, axial and tangential velocities increase for larger viscoelastic parameters while the opposite trend is noted for temperature. Concentration decreases when Schmidt number and Brownian diffusion increase. Entropy generation increases when the Bejan number increase while the opposite is true for the Brinkman number and the magnetic parameter.

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