Experimental Study on Nanofluid Flow in a Porous Cylinder: Viscosity, Permeability and Inertial Factor

Abstract:

Knowledge of fluid rheology and flow characteristics is important when studying nanofluid flow in porous media. In this study, an experimental investigation is presented to determine the nanofluid viscosity, the permeability and the inertial (non-Darcy) parameter of a porous cylinder made of several capillary tubes. The applicability of the Darcy-Forchheimer equation for power-law fluids to estimate pressure drop through the porous material is discussed. The occurrence of particle losses from the base fluid (deposition) is also verified.Experiments are completed in two steps. In the first step, physical properties of nanofluids consisting of deionized water and different volume concentrations of Al₂O₃ nanoparticles is measured. In the second step, Al₂O₃-deionized water nanofluids are pumped through a porous cylinder (porosity 0.249) to evaluate hydraulic and intrinsic permeabilities, and the inertial parameter. The effect of Al₂O₃ volume fraction on these flow properties is studied, and the void morphology changes within the porous cylinder via deposition of nanoparticles are analyzed.

• Periodical: Defect and Diffusion Forum (Volume 362)
• Pages: 47-57
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.362.47
• Online since: April 2015
• Authors: Antonio Ferreira Miguel*
• Keywords: Al₂O₃ Nanofluid, Darcy-Forchheimer Equation, Hydraulic Permeability, Inertial Parameter, Intrinsic Permeability, Nanofluid Flow, Non-Darcy Flow, Porous Media, Viscosity

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