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Lack of oscillations in Dual-Phase-Lagging heat conduction for a porous slab subject to imposed heat flux and temperature
- Source :
-
International Journal of Heat & Mass Transfer . Jul2005, Vol. 48 Issue 14, p2822-2828. 7p. - Publication Year :
- 2005
-
Abstract
- Abstract: This study shows that the physical conditions necessary for thermal waves to materialize in Dual-Phase-Lagging porous media conduction are not attainable in a porous slab subject to a combination of constant heat flux and temperature (Neumann and Dirichlet) boundary conditions. It is demonstrated that the approximate equivalence between Dual-Phase-Lagging (DuPhlag) heat conduction model and the Fourier heat conduction in porous media subject to Lack of Local Thermal Equilibrium (La Lotheq) that suggested the possibility of thermal oscillations and resonance reveals a condition that cannot be fulfilled because of physical constraints. [Copyright &y& Elsevier]
- Subjects :
- *HEAT conduction
*POROUS materials
*BOUNDARY value problems
*FLUCTUATIONS (Physics)
Subjects
Details
- Language :
- English
- ISSN :
- 00179310
- Volume :
- 48
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- International Journal of Heat & Mass Transfer
- Publication Type :
- Academic Journal
- Accession number :
- 17812253
- Full Text :
- https://doi.org/10.1016/j.ijheatmasstransfer.2005.02.005