Computational homogenization of fresh concrete flow around reinforcing bars. (September 2018)

• Record Type: Journal Article
• Authors: Kolařík, F.; Patzák, B.; Zeman, J.
• Is Part Of: Computers & structures. Volume 207(2018)
• Page Start: 37
• Page End: 49
• Publication Date: 2018-09
• Subjects: Fresh concrete flow -- Porous media flow -- Homogenization -- Stokes-Darcy coupling; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2017.07.027
• Languages: English
• ISSNs: 0045-7949

Abstract

Abstract: Motivated by casting of fresh concrete in reinforced concrete structures, we introduce a numerical model of a steady-state non-Newtonian fluid flow through a porous domain. Our approach combines homogenization techniques to represent the reinforced domain by the Darcy law with an interfacial coupling of the Stokes and Darcy flows through the Beavers-Joseph-Saffman conditions. The ensuing two-scale problem is solved by the Finite Element Method with consistent linearization and the results obtained from the homogenization approach are verified against fully resolved direct numerical simulations.