Gravitational Effects in the Collision of Elasto-Viscoplastic Drops on a Vertical Plane

Abstract

The collision of drops in a solid substrate is an interesting problem with several practical applications. When the drop is made of a complex fluid the problem presents numerical challenges due to the interaction of the mechanical properties and the free surface approach. In the present work, we solve the numerical problem of elasto-viscoplastic drops colliding in vertical plane. The free surface evolution is handled by a Marker-And-Cell method combined with a Front-Tracking interface representation. Special emphasis is given to the gravitational effects by means of exploring the Froude number. We were able to find a rich variety of outputs that can be classified as sticking, sliding, bouncing, detaching, and slithering.

Editorial for Special Issue “Advances in Experimental and Computational Rheology, Volume II”

“…The Special Issue "Advances in Experimental and Computational Rheology, Volume II" comprises 10 papers covering some of the latest advances in the fields of experimental and computational rheology, applied to a diverse class of materials and processes, which can be grouped into three main topics: rheology [1][2][3][4][5], rheometry and processing [6,7], and theoretical modeling [8][9][10].…”

“…Pedro et al [9] numerically studied the filling stage of thermoplastic injection molding with a solver implemented in the open-source computational library OpenFOAM ® and compared the new solver performance and accuracy with a proprietary code. In the work of OIshi et al [10], the authors studied the gravitational effects of elasto-viscoplastic drops colliding on vertical planes and proposed a classification for the observed behaviors.…”