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Simulation of Combustion Systems with Realistic g-JitterA number of facilities are available for microgravity combustion experiments: aircraft, drop tower, sounding rocket, space shuttle and, in the future, the international space station (ISS). Acceleration disturbances or g-jitter about the background level of reduced gravity exist in all the microgravity facilities. While g-jitter is routinely measured, a quantitative comparison of the quality of g-jitter among the different microgravity facilities has not been compiled. Low frequency g-jitter (< 1 Hz) has been repeatedly observed to disturb a number of combustion systems. Guidelines regarding tolerable levels of acceleration disturbances for a given combustion system have been developed for use in the design of ISS experiments. The validity of these guidelines, however, remains unknown. In this project, recently funded by NASA, a transient, fully three-dimensional simulation code will be developed to simulate the effects of realistic g-jitter on a number of combustion systems. Acceleration disturbances of realistic orientation, magnitude and time dependence will be included in the simulation. Since this is a newly funded project with code development just under-way no simulation results will be presented. Instead, first a short review of the relevant background concerning g-jitter will be given followed by a section on the proposed technical approach.
Document ID
19990054084
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Mell, William E.
(National Inst. of Standards and Technology Gaithersburg, MD United States)
McGrattan, Kevin B.
(National Inst. of Standards and Technology Gaithersburg, MD United States)
Baum, Howard R.
(National Inst. of Standards and Technology Gaithersburg, MD United States)
Date Acquired
August 19, 2013
Publication Date
May 1, 1999
Publication Information
Publication: Fifth International Microgravity Combustion Workshop
Subject Category
Inorganic And Physical Chemistry
Funding Number(s)
CONTRACT_GRANT: NASA Order C-32070-J
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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