Authors: Yoshiaki Ueda Yusuke Sakai Takehiko Kumagai Toshio Ishii Manabu Iguchi
Publish Date: 2010/01/26
Volume: 13, Issue: 1, Pages: 5-6
Abstract
A trajectory of a water droplet of volume 04 μL impacting and bouncing on the hydrophobic surface 143° inclined with 12° is presented The photograph was taken with a 35 mm format digital SLR camera in a longtime exposure of 25 s illuminated with a couple of continuous point lighting Also a selected comparison is shown for snapshots of a bouncing millimetric droplet having volume of 10 μL inclined angle of 15° and contact angle of 147° during the first impact between the experimental results which were recorded with a highspeed camera at 1222 frames/s and the 3D computation using a VolumeofFluid method on 330 × 70 × 35 computational grids with dt = 10 × 10−4 s which was carried out with FLUENT software At the impact the droplet is found to deform and then dissipate the energy due to the surface tension
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