Open AccessNumerical simulation of drop impingement and bouncing on a heated hydrophobic surface
Author(s) -
Nima Samkhaniani,
Holger Marschall,
A. Stroh,
Bettina Frohnapfel,
Martin Wörner
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2116/1/012073
Subject(s) - mechanics , weber number , drop (telecommunication) , heat transfer , computer simulation , rotational symmetry , computation , drop impact , materials science , thermodynamics , physics , reynolds number , wetting , mathematics , engineering , mechanical engineering , algorithm , turbulence
The heat transfer of a single water droplet impacting on a heated hydrophobic surface is investigated numerically using a phase field method. The numerical results of the axisymmetric computations show good agreement with the dynamic spreading and subsequent bouncing of the drop observed in an experiment from literature. The influence of Weber number on heat transfer is studied by varying the drop impact velocity in the simulations. For large Weber numbers, good agreement with experimental values of the cooling effectiveness is obtained whereas for low Weber numbers no consistent trend can be identified in the simulations.