Statistics – Applications
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..504..398g&link_type=abstract
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM - 2000. AIP Conference Proceedings, Volume 504, pp. 398-401 (2000).
Statistics
Applications
Spaceborne And Space Research Instruments, Apparatus, And Components
Scientific paper
Combustion of droplet sprays and particle clouds is a very important area due to numerous applications to engines and power systems as well as to problems of industrial safety and clean environment. However, combustion of two-phase systems is not well understood yet. In the combustion of sprays or clouds gravitational effects add another difficulty due to the sedimentation of the particles and droplets. Indeed, stability of a spray or a cloud under normal gravity can only be achieved by stirring this two-phase mixture which produces a turbulent flow field. Therefore, under normal gravity conditions, the combustion characteristics of two-phase mixtures can only be obtained in turbulent flow. On the other hand, and namely for high-pressure conditions, these characteristics are in fact also strongly influenced by natural convection. It is proposed to develop a combustion facility for the International Space Station, which would make it possible to study high pressure combustion of spray and clouds as well as of single droplets and particles under microgravity. In this paper we present results of our preliminary analysis of possibilities to develop a high pressure spray and cloud combustion module for the ISS. We analyzed previous experiments on combustion of clouds and sprays under conditions of both normal and reduced gravity from the standpoint of working out the optimum techniques for the use onboard the ISS. The reader can find more details of this analysis in Ref. 1. On the basis of this analysis, some promising methods were identified and tested experimentally in parabolic flights of A300 ZERO-G aircraft in December 1998 and March 1999. .
Chauveau C.
Durox D.
Gökalp Iskender
Lacas F.
Legrand Bernard
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