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arXiv · 2311.11377

The Fluid Mechanics of Splatter Painting

Diego Ávila-García·Carlos Salazar-Martín·Javier Rodríguez-Rodríguez·Mithun Ravisankar·Roberto Zenit·Lorène Champougny
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Abstract

In splatter painting, a collection of liquid droplets is projected onto the substrate by imposing a controlled acceleration to a paint-loaded brush. This work aims at unraveling the physical phenomena at play in this widespread artistic technique. By characterizing the kinematics of the splattering action (brush flicking or tapping), we identify the main force driving liquid out of the tip of the brush (hair bundle). For real or simplified brushes, the amount of liquid expelled is measured for various liquid viscosities and imposed accelerations, among other parameters. Experimental trends are successfully captured by a physical model that reproduces two distinguished limits: an inertia-dominated flow and a viscous-dominated flow in an anisotropic porous medium with parallel pores. Beyond splatter painting, our analysis provides a framework to describe mechanical drying strategies for fibrous materials or porous structures.

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Diego Ávila-García, Carlos Salazar-Martín, Javier Rodríguez-Rodríguez, Mithun Ravisankar, Roberto Zenit, Lorène Champougny. 2023-11-19. The Fluid Mechanics of Splatter Painting. https://arxiv.org/abs/2311.11377

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