화학공학소재연구정보센터
Transport in Porous Media, Vol.111, No.2, 541-553, 2016
The Onset of Convection in a Horizontal Porous Layer with Spatially Non-Uniform Internal Heating
We have used linear instability theory to determine the condition for the onset of convection in an internally heated horizontal layer, occupied by a porous medium, when the source strength varies in the vertical direction. Some paradigmatic special cases are investigated. In particular, we investigated linear, quadratic and concentrated source strength distributions. Stability is increased in those situations in which the region where the basic temperature gradient is destabilizing is of small extent.