ON PRESSURIZED FUNCTIONALIZED PARTICLE-LADEN FLUID INFILTRATION INTO POROUS MEDIA

Author(s)

Zohdi, Tarek I. ^[1] ; Campello, Eduardo M. B. ^[2]

Affiliation

^[1] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 - USA

^[2] Univ Sao Paulo, Dept Struct & Geotech Engn, POB 61548, BR-05424970 Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING; v. 17, n. 2, p. 223-237, 2019.
• Web of Science Citations: 2

Abstract

In many emerging applications, the controlled infiltration of specially designed particle-laden fluids into porous media is critical. The added materials are often chosen with the objective to mechanically, electrically, or magnetically functionalize the overall material. Because of the increased viscosity of particle-laden fluids and the pore-dependent permeability of the medium to be infiltrated, there is a rich choice of parameters that govern the overall process: (i) the base viscosity of the solvent, (ii) the volume fraction of particles in the fluid, (iii) the pore volume fraction of the porous medium, and (iv) the absolute permeability of the medium. This paper develops Darcy-law-like expressions relating the infiltration flow rate of particle-laden fluids to the pressure gradient on porous solids, as a function of the four above parameters. General trends of the process may be satisfactorily described with the derived analytical expressions, yet at an affordable cost on accuracy for rapid daily design analysis. The paper then develops direct, large-scale numerical simulations based on the discrete element method to illustrate the practical use of the proposed relations. (AU)

• FAPESP's process: 12/04009-0 - Multiscale formulations for the computational modeling of membranes
• Grantee: Eduardo de Morais Barreto Campello
• Support Opportunities: Scholarships abroad - Research