Fluid Flow through Macro-Porous Materials: Friction Coefficient and Wind Tunnel Similitude Criteria

Allori, Davide; Bartoli, Gianni; Miguel, António F.

doi:10.1615/interjfluidmechres.v39.i2.40

Cited by 5 publications

(7 citation statements)

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“…7 and 8), the exponential variation with θ provides a slight better correlation than the linear correlation. In both cases it is clear that, apart from the properties of porous structure, the hydraulic permeability depends on the properties of the permeant fluid [31,46,47].…”

Section: Experiments and Methodsmentioning

confidence: 99%

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

Miguel

2015

DDF

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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 Al2O3nanoparticles 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 Al2O3volume fraction on these flow properties is studied, and the void morphology changes within the porous cylinder via deposition of nanoparticles are analyzed.

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Section: Experiments and Methodsmentioning

confidence: 99%

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

Miguel

2015

DDF

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“…Perforated plates have been employed in a variety of areas ranging from sound absorption [1] and shading [2], to heat exchangers [3] and airflow control [4]. Both experimental and numerical simulation studies are available in the literature [5][6][7][8]. Yavuzkurt and Catchen [9] conducted wind tunnel tests on seven perforated plates with different thicknesses and porosities to examine the correlation between pressure loss and air velocity.…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis of Perforated Plates and Open-Cell Materials Aerodynamics

Miguel

2023

DDF

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In this paper, a numerical study of fluid flow through perforated panels with square holes and open-cell material with cubic cells is presented. Structures with a wide variety of porosities (0.15<φ<0.94) and Reynolds numbers (0.01<Re<6000) are studied. Among the various outcomes obtained, the results indicate that pressure gradient vs Reynolds number exhibits three different forms of variation, including linear (Re<1), nonlinear (1≤Re<4000), and one where the pressure gradient is virtually constant with the Reynolds number (Re≥4000). The results were provided in terms of loss factor, but also of intrinsic permeability and the Forchheimer coefficient. Relationships that connect porosity to the loss factor, intrinsic permeability, and Forchheimer coefficient are also presented. These findings may prove useful in better understanding the flow behaviors in perforated panels and cell metal foams, which have a wide range of applications.

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“…To determine viscous and inertial loss coefficients of the perforated plate, various studies were executed on an experimental [1] and numerical [3][4] basis. Also, several analytical relations [4][5] and experimental methods were developed and described for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Analysis of velocity distribution in an air flow through a thin perforated plate

Groma,

Kazda,

Kotek

et al. 2022

EPJ Web Conf.

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Fluid Flow through Macro-Porous Materials: Friction Coefficient and Wind Tunnel Similitude Criteria

Cited by 5 publications

References 0 publications

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

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

CFD Analysis of Perforated Plates and Open-Cell Materials Aerodynamics

Analysis of velocity distribution in an air flow through a thin perforated plate

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