IMPACHT - Drop wetting and evaporation in microgravity

Paper number

IAC-13,A2,3,5,x19595

Coauthor

Dr. David BRUTIN, IUSTI UMR 7343 AMU/CNRS, France

Coauthor

Mr. Florian Carle, Polytech’ Marseille - IUSTI, UMR 6595 CNRS, France

Coauthor

Prof. Qiu-Sheng Liu, Institute of Mechanics, Chinese Academy of Sciences, China

Coauthor

Prof. Jing-Chang Xie, Institute of Mechanics, Chinese Academy of Sciences, China

Coauthor

Mr. Gabriel Pont, Centre National d'Etudes Spatiales (CNES), France

Coauthor

Mr. Bernard Zappoli, Centre National d'Etudes Spatiales (CNES), France

Year

2013

Abstract

IMPACHT which stand for Interface Microgravity PhAse Change Heat Transfer is a French-Chinese
experiment on-board a Chinese recoverable satellite SJ-10 in 2015/2016. 

The purpose of IMPACHT is to study the wetting dynamics and the evaporation of water, ethanol and mixture droplets under reduced gravity. Ground based research is performed on the topic by the two teams in France and in China while the experiment hardware development is leaded by CNES (French Space Agency). 

Technically, visible and infrared cameras are used to characterize the droplet geometry and flow motion. The heat flux meter is used to determine the evaporation heat flux absorbed by the droplet during the different stage of the drying. Evaporating droplets are the location of ow instabilities due to thermal effects. In microgravity, these thermal effects are only due to surface tension gradient along the droplet interface and induce the appearance of hydrothermal waves at the droplet interface. In the full paper, we will present the hardware design and the results expected.

Abstract document

IAC-13,A2,3,5,x19595.brief.pdf

Manuscript document

IAC-13,A2,3,5,x19595.pdf (🔒 authorized access only).

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