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Journal of Polymer & Composites Original Research Special issue

Modeling and Simulation of Radiative MHD Casson-Type Polymer Composite Flow over a Porous Wedge with Variable Thermal Source and Sink

  1. B. Tulsi Lakshmi Devi Department of Mathematics, Koneru Lakshmaiah Education Foundation, Hyderabad
  2. Alfunsa Prathiba Department of Humanities and Sciences (Mathematics), CVR College of Engineering, Mangalpally, Ibrahimpatnam, Hyderabad
  3. V.V.L. Deepthi Department of Humanities and Sciences (Mathematics), CVR College of Engineering, Mangalpally, Ibrahimpatnam, Hyderabad
  4. Sridevi Dandu Department of Engineering Mathematics & Humanities, S.R.K.R. Engineering College, Bhimavaram, West Godavari District

Abstract

This study presents a numerical investigation of the radiative magnetohydrodynamic (MHD) flow and heat transfer characteristics of a Casson-type polymer fluid over a moving and extending porous wedge under the influence of a spatially varying heat source and sink. The Casson fluid model, representing a class of viscoplastic polymeric materials, is analyzed within the MHD framework to explore the combined effects of magnetic field intensity, rheological behavior, and porous medium interaction on the transport characteristics. The governing nonlinear momentum and energy equations are transformed into a system of ordinary differential equations through similarity transformations and solved using the Runge–Kutta fourth-order method coupled with a shooting technique. The influence of key dimensionless parameters—including the magnetic parameter, Casson number, variable heat generation rate, and stretching velocity—on the velocity and temperature distributions is examined in detail. The results reveal that the magnetic field and Casson parameter significantly modify the boundary layer thickness and enhance heat transfer control. This investigation provides valuable insights into the thermo-rheological performance of MHD Casson polymer fluids in porous composite systems, with potential applications in polymer extrusion, composite material processing, and electronic cooling technologies.

Keywords

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