Some properties of convective oscillations in porous medium

Journal Article · Fri Nov 08 04:00:00 EST 1996 · Numerical Heat Transfer. Part A, Applications

DOI:https://doi.org/10.1080/10407789608913860· OSTI ID:418043

Khallouf, H; Mojitabi, A ^[1]; Gershuni, G Z ^[2]

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1. Univ. Paul Sabatier, Toulouse (France)
2. Perm State Univ. (Russian Federation). Dept. of Theoretical Physics

Convective oscillations in porous media are studied numerically. A two-dimensional square, differentially heated cavity, filled with a saturated porous medium, is considered subject to linear harmonic oscillations in the vertical direction. The formulation is based on the Darcy-Boussinesq model. The problem includes three nondimensional parameters: the Rayleigh number for porous media Ra, its vibrational analog Ra{sub v}, and the nondimensional frequency f. The time-dependent Darcy-Boussinesq equations have been solved using a pseudo-spectral Chebyshev collocation method. The instantaneous fields of the established oscillatory regimes are presented. Also, some instantaneous and mean characteristics are studied and discussed. The distinctions from the case of viscous fluid alone are emphasized.

• Sponsoring Organization: USDOE
• OSTI ID: 418043
• Journal Information: Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 6 Vol. 30; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CAVITIES
CONVECTION
HARMONICS
NUMERICAL ANALYSIS
POROUS MATERIALS