Bibliographic Citation
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| Title | Numerical study of the validity of the Boussinesq approximation for a fluid-saturated porous medium |
| Creator/Author | Hickox, C.E. ; Gartling, D.K. |
| Publication Date | 1982 Jan 01 |
| OSTI Identifier | OSTI ID: 6534714; Legacy ID: DE83001347 |
| Report Number(s) | SAND-82-0552C; CONF-830301-4 |
| DOE Contract Number | AC04-76DP00789 |
| Other Number(s) | Other: ON: DE83001347 |
| Resource Type | Conference |
| Specific Type | Technical Report |
| Resource Relation | Conference: ASME-JSME thermal engineering joint conference, Honolulu, HI, USA, 20 Mar 1983 |
| Research Org | Sandia National Labs., Albuquerque, NM (USA) |
| Subject | 42 ENGINEERING; NATURAL CONVECTION; MATHEMATICAL MODELS; POROUS MATERIALS; AIR; FLUID FLOW; SATURATION; TEMPERATURE DEPENDENCE; THERMODYNAMIC PROPERTIES; WATER; CONVECTION; FLUIDS; GASES; HYDROGEN COMPOUNDS; MATERIALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES |
| Description/Abstract | The validity of the Boussinesq approximation is investigated for natural convection in a fluid-saturated porous medium. A perturbation method is utilized to assess the relative importance of individual terms in the differential equations which describe the natural convection process. Specific limits to the validity of the Boussinesq approximation are identified for water and air. For water, it is shown that the restrictions imposed by the classical Boussinesq appoximation can be relaxed by allowing for the variation of thermophysical properties with temperature while still retaining the incompressible form of the continuity relation. Results of the analysis are verified through numerical calculations performed for steady natural convvection in a planar, water-saturated porous region, of unity aspect ratio, subjected to a tempertaure difference imposed between the vertical side walls. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 20 |
| Availability | NTIS, PC A02/MF A01. |
| System Entry Date | 2008 Feb 08 |
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