Authors
Ryuta Hatakenaka, Jan Breitenbach, Ilia V Roisman, Cameron Tropea, Yoshiyuki Tagawa
Publication date
2019/12/1
Journal
International Journal of Heat and Mass Transfer
Volume
145
Pages
118729
Publisher
Pergamon
Description
Drop impact onto a hot substrate leads to various hydrodynamic outcomes depending on the substrate temperature and the impact parameters: deposition, drop dancing, thermal atomization, and finally rebound at temperatures above the dynamic Leidenfrost condition. In the present experimental study this parameter space has been extended to conditions of a depressurized environment (1–101 kPa), which are relevant to space applications such as a reentry spaceship or a rocket engine. The impact onto a superheated smooth substrate with relatively small impact velocities (0.1–0.46 m/s) has been captured using a high-speed video camera system. Under these conditions two new modes of drop outcome have been identified; magic carpet breakup, in which the drop splashes immediately after the impact, leading to extensively large lateral deformation and upward drop movement, and tiptoeing, in which the …
Total citations
20202021202220232024171392
Scholar articles
R Hatakenaka, J Breitenbach, IV Roisman, C Tropea… - International Journal of Heat and Mass Transfer, 2019