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Convection phenomena at reduced gravity of importance for materials processingThe basic aspects of convection processes are delineated. It is shown that even in weak gravitational fields buoyancy can induce fluid motions. Furthermore, at reduced gravity other nongravity forces such as surface or interfacial tensions, g-jitter, therma-volume expansions, density differences due to phase changes, and magnetic and electric fields can induce fluid motions. The various types of flow possible with these various driving forces are described and criteria for determining the extent and nature of the resulting flows and heat transfer are presented. The various physical mechanisms that can occur separately and in combination are indicated and the present state of knowledge of each of the phenomena is outlined.
Document ID
19770007128
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ostrach, S.
(Case Western Reserve Univ. Cleveland, OH, United States)
Date Acquired
August 8, 2013
Publication Date
September 1, 1976
Publication Information
Publication: ESA Mater. Sci. in Space
Subject Category
Astronautics (General)
Accession Number
77N14071
Funding Number(s)
CONTRACT_GRANT: NAS8-31802
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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