Jumps, somersaults, and symmetry breaking in Leidenfrost drops

Chen, S and Bertola, V ORCID: 0000-0001-5357-6191 (2016) Jumps, somersaults, and symmetry breaking in Leidenfrost drops. Physical Review E, 94 (2). 021102-.

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Abstract

When a droplet of water impacts a heated surface, the drop may be observed to bounce. Recently is has been found that small quantities (∼100 ppm) of polymer additives such as polyethylene oxide can significantly increase the maximum bouncing height of drops. This effect has been explained in terms of the reduction of energy dissipation caused by polymer additives during the drop retraction and rebound, resulting in higher mechanical energy available for bouncing. Here we demonstrate, by comparing three types of fluids (Newtonian, shear-thinning, and viscoelastic), that the total kinetic energy carried by low-viscosity Newtonian drops during retraction is partly transformed into rotational kinetic energy rather than dissipated when compared with high-viscosity or non-Newtonian drops. We also show that non-Newtonian effects play little role in the energy distribution during drop impact, while the main effect is due to the symmetry break observed during the retraction of low-viscosity drops.

Item Type:	Article
Additional Information:	cited By 0 art_number: 021102 document_type: Article source: Scopus
Uncontrolled Keywords:	7 Affordable and Clean Energy
Depositing User:	Symplectic Admin
Date Deposited:	22 Feb 2017 09:48
Last Modified:	15 Mar 2024 09:45
DOI:	10.1103/PhysRevE.94.021102
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3005914