Natural convection in porous media—I. Nonfreezing

Autor:	H. Lein, Richard S. Tankin
Rok vydání:	1992
Předmět:	Fluid Flow and Transfer Processes Materials science Natural convection Computer simulation Mechanical Engineering Boundary (topology) Thermodynamics Rayleigh number Mechanics Condensed Matter Physics Aspect ratio (image) Physics::Geophysics Heat transfer Boundary value problem Porous medium
Zdroj:	International Journal of Heat and Mass Transfer. 35:175-186
ISSN:	0017-9310
DOI:	10.1016/0017-9310(92)90018-n
Popis:	The Christiansen filter concept is used to visualize natural convection in porous media. Studies are conducted with both permeable and impermeable upper boundaries. The experimental results agree well with the numerical calculations which are based upon Darcy's law. Three different permeabilities as well as different test section aspect ratios (width/height) are examined. It is found that the aspect ratio of the cells does not vary with modified Rayleigh number for the impermeable upper boundary but this ratio increases significantly with modified Rayleigh number for the permeable upper boundary.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::871478e2eac3c837c0ba6af3ec10bde3 https://doi.org/10.1016/0017-9310(92)90018-n Zobrazit plný text záznamu