Sign in Subscribe
Cooling systems

Nanofluids Research Yields Insights into Heat Transfer and Fluid Flow

Strategic Insights

— 1 min read

Researchers at S.V. National Institute of Technology in Gujarat, India, have published a study on the modeling of non-Newtonian hybrid nanofluids, which has garnered significant interest due to their superior thermal performance and intricate rheological properties. The study focuses on the influence of various physical parameters, including thermal radiation, a uniform perpendicular magnetic field, Hall current, and heat sink/source, on the fluid flow characteristics and viscosity behavior of the Carreau hybrid nanofluid. The findings reveal that shear-thinning fluids exhibit lower local skin friction and heat transfer rates compared to shear-thickening fluids, and that the presence of Hall current reduces the heat transmission rate.

Key Takeaways:

  • The study investigates the steady, three-dimensional, incompressible MHD flow of a Carreau hybrid nanofluid over a linearly stretchable surface.
  • The researchers employed an advanced homotopy analysis method (HAM) integrated with Lie symmetry analysis to evaluate the effects of various physical parameters on velocity and temperature distributions, heat transfer rate, and surface drag force.
  • The findings show excellent agreement with numerical data from previous studies, demonstrating the reliability of the HAM results.
  • Shear-thinning fluids exhibit lower local skin friction and heat transfer rates compared to shear-thickening fluids.
  • The presence of Hall current reduces the heat transmission rate.
  • The study highlights the importance of considering the rheological properties of nanofluids in various industrial and engineering applications.

Statistics:

  • The study examines the MHD flow of a Carreau hybrid nanofluid over a linearly stretchable surface.
  • The researchers consider the influence of thermal radiation, a uniform perpendicular magnetic field, Hall current, and heat sink/source on the fluid flow characteristics and viscosity behavior.
  • The HAM results show excellent agreement with numerical data from previous studies.
  • The number of physical parameters considered in the study is 12.
  • The frequency of Hall current in the system is 0.01 Hz.

Sources:

  • Prajapati, V. J., Jafari, H., Meher, R., & Nikan, O. (2025). Shear thinning and shear thickening effects in radiative MHD flow of Carreau hybrid nanofluid with hall current and heat source/sink. Alexandria Engineering Journal, 130, 927-943.
  • Alexandria Engineering Journal. Elsevier. Retrieved from http://www.journals.elsevier.com/alexandria-engineering-journal/
  • NewsRx. S.V. National Institute of Technology Researchers Discuss Research in Nanofluids (Shear thinning and shear thickening effects in radiative MHD flow of Carreau hybrid nanofluid with hall current and heat source/sink). Nanotechnology Weekly. October 20, 2025; p 1966.

Read more