MIXED CONVECTION IN A SQUARE CAVITY FILLED WITH HYBRID NANOFLUID


Şahin B.

5th International Anatolian Energy Symposium, Trabzon, Turkey, 24 - 25 March 2021, pp.794-802

  • Publication Type: Conference Paper / Full Text
  • City: Trabzon
  • Country: Turkey
  • Page Numbers: pp.794-802

Abstract

Mixed convection in a square cavity heated from the left wall and cooled from the right wall is investigated numerically. The horizontal walls of the cavity are insulated. The heated wall of the cavity is moved upwards. The cavity is filled with a water-based hybrid nanofluid containing Ag-MgO nanoparticles. Three different nanoparticle volume fraction (0,1, and 2 %) and two different Richardson number (10-1 and 1) are investigated numerically for different Reynolds numbers. Differential equations are discretized over the SIMPLE algorithm and solved iteratively using the finite control volume method. Streamlines, isotherms, local and average Nusselt numbers for the heated wall are presented. It is determined that the heat transfer increase with increasing nanoparticle volume fraction. However, the change of the Richardson number and Reynolds number significantly affects the heat transfer much more than the nanoparticle volumetric fraction.