72th Annual Meeting of the APS Division of Fluid Dynamics (November 23, 2019 — November 26, 2019)

P0007: Coffee Painting

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Authors

• Said Shakerin, Department of Mechanical Engineering, University of the Pacific

DOI: https://doi.org/10.1103/APS.DFD.2019.GFM.P0007

Coffee Painting

1.Leave small vol. of coffee (~2-3 cm3) in a cup.

2.Swirl coffee around.

3.Tilt the cup ~30o and hold. As coffee runs down some of its particles stick to the bottom. 

4.Turn the cup a little, tilt, and hold; repeat until you like formation of particles, or the painting!

This is fascinating; random flows turn into intriguing paintings! Images shown here were cropped to the bottom of a porcelain cup; no other alterations were done to the images.

Best coffee for this purpose can be found in hotel rooms. Individually packaged in a filter bag, fine particles pass through the filter when making coffee.