Numerical experiments in multiple Representative Elementary Volumes (REVs) were conducted to calculate macroscopic parameters for porous media models. The simulation of a microscopic flow that develops through a porous medium of 75% porosity formed by staggered square cylinders is presented to that purpose. A laminar steady flow regime (1 < Re < 150) is considered together with Péclet numbers in the 10–103 range. In particular, the interfacial heat transfer coefficient hsf, and the streamwise thermal dispersion coefficient kD−xx, are computed employing a double average over numerical results. The advantage of using a double average in multiple REVs is discussed comparing calculated parameters with those computed in single periodic REVs. The macroscopic porous media model is shown to be in excellent agreement with results obtained averaging microscopic numerical results for Péclet numbers in the 102–103 range.
- Fluids Engineering Division
Calculation of the Interfacial Heat Transfer and Streamwise Dispersion Coefficients Employing Double Volume Average
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Teruel, FE. "Calculation of the Interfacial Heat Transfer and Streamwise Dispersion Coefficients Employing Double Volume Average." Proceedings of the ASME 2013 Fluids Engineering Division Summer Meeting. Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives. Incline Village, Nevada, USA. July 7–11, 2013. V01CT23A003. ASME. https://doi.org/10.1115/FEDSM2013-16119
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