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Influence of thermal properties on temperature of fluid with micro-structures

Author

Listed:
  • Nawaz, M.
  • Rana, Shafia

Abstract

This work discusses the impact of variation of thermal properties (viscosity, thermal conductivity, vortex viscosity, dynamic viscosity, and spin gradient viscosity) with respect to the temperature of the micropolar fluid. Basic equations with the law of containing micro-structures conservation of angular moment are used to model the transport of heat in polymeric liquid, the micropolar fluid. Modeled set of coupled nonlinear problems are solved numerically using finite element method (FEM). The results are validated by comparing them with already published work. The macro-motion is impacted significantly by the vortex viscosity and spin gradient viscosity. The angular velocity is decreased when vortex viscosity is varied. The wall momentum diffuses in the micropolar fluid of temperature dependent viscosity more rapidly in comparison with wall momentum diffusion in the micropolar fluid of constant viscosity. However, the angular momentum of micropolar fluid with constant dynamic viscosity is greater than that of micropolar fluid with variable dynamic viscosity. The diffusion of heat in micropolar fluid speeds up as its thermal conductivity increases due to a rise in the temperature of the micropolar fluid.

Suggested Citation

  • Nawaz, M. & Rana, Shafia, 2019. "Influence of thermal properties on temperature of fluid with micro-structures," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 531(C).
    • Handle: RePEc:eee:phsmap:v:531:y:2019:i:c:s0378437119308878
    DOI: 10.1016/j.physa.2019.121494
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