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Determination of the natural convection coefficient in low-gravityFire safety is an important issue in the current space program; ignition in low-g needs to be studied. The reduction in the gravitational acceleration causes changes in the ignition process. This paper examines the effect of gravity on natural convection, which is one of the important parameters in the ignition process. The NASA-Lewis 2.2 Second Drop Tower provided the low-gravity environment for the experiments. A series of experiments was conducted to measure the temperature of a small copper plate which was heated by a high intensity lamp. These experiments verified that in low-gravity the plate temperature increased faster than in the corresponding 1-g cases, and that the natural convection coefficient rapidly decreased in the low-gravity environment.
Document ID
19920044448
Document Type
Conference Paper
Authors
Goldmeer, J. (Case Western Reserve University Cleveland, OH, United States)
Motevalli, V. (NASA Lewis Research Center Cleveland, OH, United States)
Haghdoust, M. (Worcester Polytechnic Institute, MA, United States)
Jumper, G. (Systems Integration Engineering, Inc. Lexington, MA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number
AIAA PAPER 92-0712
Distribution Limits
Public
Copyright
Other