期刊
MECHANICS RESEARCH COMMUNICATIONS
卷 37, 期 5, 页码 441-444出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechrescom.2010.06.005
关键词
Penetrative convection; Energy method; Internal heat source/sink; Anisotropic porous media
类别
资金
- INdAM
Penetrative convection in an anisotropic porous medium is simulated via internal heating. We consider both internal heat sources and sinks, where the porous medium has constant anisotropic thermal diffusivity and non-homogeneous permeability. Both linear instability and global nonlinear energy stability analyses are performed. By adopting a differential constraint approach, the nonlinear stability boundaries are shown to be sharp when compared with the linear instability thresholds. In contrast, it is shown that adopting a standard energy analysis does not yield sharp results. (C) 2010 Elsevier Ltd. All rights reserved.
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