naa a22 4500 51081932X CHVBK 20180411083523.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11814-013-0039-2 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0039-2 Kim Min Department of Chemical Engineering, Jeju National University, 690-756, Jeju, Korea aut Analysis of onset of buoyancy-driven convection in a fluid layer saturated in anisotropic porous media by the relaxed energy method [Elektronische Daten] [Min Kim] A theoretical analysis of buoyancy-driven instability under transient basic fields is conducted in an initially quiescent, fluid-saturated, horizontal porous layer. Darcy's law is used to explain characteristics of fluid motion, and the anisotropy of permeability is considered. Under the Boussinesq approximation, the energy stability equations are derived following the energy formulation. The stability equations are analyzed numerically under the relaxed energy stability concept. For the various anisotropic ratios, the critical times are predicted as a function of the Darcy-Rayleigh number, and the critical Darcy-Rayleigh number is also obtained. The present predictions are compared with existing theoretical ones. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Buoyancy-driven Convection nationallicence Anisotropic Porous Medium nationallicence Energy Mmethod nationallicence Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/6(2013-06-01), 1207-1212 0256-1115 30:6<1207 2013 30 11814 https://doi.org/10.1007/s11814-013-0039-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0039-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kim Min Department of Chemical Engineering, Jeju National University, 690-756, Jeju, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/6(2013-06-01), 1207-1212 0256-1115 30:6<1207 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer