A numerical study of the stability of thermohaline convection in a rectangular box containing a porous medium

Journal Article · · International Communications in Heat and Mass Transfer; (United States)

DOI:https://doi.org/10.1016/0735-1933(94)90024-8· OSTI ID:7115457

Murty, V D ^[1]; Clay, C L; Camden, M P; Anselmo, E R ^[2]

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1. Univ. of Portland, OR (United States)
2. Flight Dynamics Lab., Wright Patterson AFB, OH (United States)

The finite element method is used to study double diffusive convection in a rectangular box containing a porous medium. The porous medium is described by means of the Darcy-Brinkman model. The problem solved is the Benard problem in the box. It is found that the stability of the flow is dependent on a combination of thermal Rayleigh number, buoyancy ratio, and Lewis number. This combination for the onset of cellular motion can be written as Ra(1+N.Le) = 4[pi][sup 2]. This criterion holds for all combinations of Ra, N, and Le whether the thermal and soluble gradients are aiding or opposing each other. Numerical results are presented in the form of flow, temperature, and concentration fields and average Nusselt and Sherwood numbers.

• OSTI ID: 7115457
• Journal Information: International Communications in Heat and Mass Transfer; (United States), Journal Name: International Communications in Heat and Mass Transfer; (United States) Vol. 21:2; ISSN 0735-1933; ISSN IHMTDL
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
152001* -- Geothermal Data & Theory-- Properties of Aqueous Solutions
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
AQUIFERS
CALCULATION METHODS
CAVITIES
CONVECTION
ENERGY TRANSFER
GROUND WATER
HEAT TRANSFER
HYDROGEN COMPOUNDS
MAGMA
MASS TRANSFER
MATERIALS
OXYGEN COMPOUNDS
POROUS MATERIALS
WATER