Recent Accomplishment of “Group Combustion” Experiments aboard Kibo on ISS

DOI:10.15011//jasma.36.360301
Int. J. Microgravity Sci. Appl. 2019p360301
Author
M. MIKAMI, Y. YOSHIDA, T. SEO, O. MORIUE, T. SAKASHITA, M. KIKUCHI and Y. KAN
Organization
Department of Mechanical Engineering, Yamaguchi University, Faculty of Engineering, Kyushu University, JEM Utilization Center, Japan Aerospace Exploration Agency
Abstract
The first microgravity combustion experiments were conducted in 2017 aboard the Japanese Experiment Module “Kibo” on ISS, titled "Elucidation of Flame Spread and Group Combustion Excitation Mechanism of Randomly Distributed Droplet Clouds (Group Combustion)." The objective of this experiment is to study the effects of droplet interaction, radiative heat loss from a flame, and droplet motion during flame spread. This report describes some recent accomplishments from the “Group Combustion” experiments with droplet-cloud elements to study the effects of droplet interaction and randomly distributed droplet clouds with about 100 droplets to study the macroscopic characteristics of flame spread and local flame spread characteristics. Two types of anomalous behavior observed near the group-combustion-excitation limit are also reported, which had not been expected from parabolic flight experiments and percolation calculations to express the group-combustion excitation through flame spread over droplets.
Keyword(s)
Space-based combustion experiment, Droplet cloud, Flame spread, Group combustion, Kibo/ISS
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Received 9 May 2019, accepted 14 June 2019, published 31 July 2019

© The Japan Society of Microgravity Applicaiton

この投稿文は次の言語で読めます: Japanese

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