Abstract
We present the equations for wicking in two- and three-dimensional porous media when liquid is evaporating through the wet front using the Green--Ampt saturated capillary flow model in polar and spherical geometries. The time-dependent behavior of two-dimensional wicking influenced by front interface evaporation manifests distinctly from the influence on wicking by normal surface evaporation. This is shown in several ways; notably, the first-order effects of the front evaporation, as considered via an evaporation-capillary number, is of a lower order in the front position than normal evaporation. Furthermore, the front evaporation-induced steady states of the front position and bulk velocity vary significantly with the dimensionality of the flow expansion in the porous domain; with respect to the dimensionality, the front position decreases while the bulk velocity increases.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
