Numerical results are presented for transient natural convection from a heat source vertically embedded in a saturated porous layer. The porous layer is initially thermally stratified with a negative temperature gradient. The effects of the source strength and its buried depth on the penetration of convective flows are investigated. The results, which include the buoyancy-induced flow patterns and temperature profiles, as well as the heat transfer coefficient in terms of the Nusselt number, are presented for a wide range of base Rayleigh number and stratification parameter. The results thus obtained have important implications for applications in geothermal energy and underground disposal of nuclear wastes.
- Heat Transfer Division
Transient Natural Convection From a Vertically Embedded Heat Source in a Thermally Stratified Porous Layer
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Zhang, J, & Lai, FC. "Transient Natural Convection From a Vertically Embedded Heat Source in a Thermally Stratified Porous Layer." Proceedings of the ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. Heat Transfer: Volume 1. Jacksonville, Florida, USA. August 10–14, 2008. pp. 417-425. ASME. https://doi.org/10.1115/HT2008-56110
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