γ-Nanofluid Thermal Transport between Parallel Plates Suspended by Micro-Cantilever Sensor by Incorporating the Effective Prandtl Model: Applications to Biological and Medical Sciences

Molecules. 2020 Apr 13;25(8):1777. doi: 10.3390/molecules25081777.

Abstract

The flow of nanofluid between infinite parallel plates suspended by micro-cantilever sensors is significant. The analysis of such flows is a rich research area due to the variety of applications it has in chemical, biological and medical sciences. Micro-cantilever sensors play a significant role in accurately sensing different diseases, and they can be used to detect many hazardous and bio-warfare agents. Therefore, flow water and ethylene glycol (EG) composed by γ-nanoparticles is used. Firstly, the governing nanofluid model is transformed into two self-similar nanofluid models on the basis of their effective models. Then, a numerical method is adopted for solution purposes, and both the nanofluid models are solved. To enhance the heat transfer characteristics of the models, the effective Prandtl model is ingrained in the energy equation. The velocity F'(η) decreases with respect to the suction of the fluid, because more fluid particles drags on the surface for suction, leading to an abrupt decrement in F'(η). The velocity F'(η) increases for injection of the fluid from the upper end, and therefore the momentum boundary layer region is prolonged. A high volume fraction factor is responsible for the denser characteristics of the nanofluids, due to which the fluids become more viscous, and the velocity F'(η) drops abruptly, with the magnetic parameters favoring velocity F'(η). An increase in temperature β ( η ) of Al2O3-H2O and γAl2O3-C2H6O2 nanofluids was reported at higher fraction factors with permeable parameter effects. Finally, a comparative analysis is presented by restricting the flow parameters, which shows the reliability of the study.

Keywords: micro-cantilever sensor; nanofluids effective models; numerical thermal transport; thermophysical characteristics; γAl2O3 nanoparticles.

MeSH terms

  • Aluminum Oxide / chemistry
  • Computer Simulation
  • Ethylene Glycol / chemistry
  • Hot Temperature
  • Hydrodynamics
  • Magnetics
  • Models, Theoretical
  • Nanoparticles / chemistry*
  • Nanotechnology / instrumentation*
  • Nanotechnology / methods*
  • Reproducibility of Results
  • Temperature
  • Viscosity
  • Water / chemistry

Substances

  • Water
  • Ethylene Glycol
  • Aluminum Oxide