Convection induced by a fluctuating acceleration field

Jaume Casademunt, Jorge Vinals

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Cavity flow induced by a fluctuating gravitational field normal to an initially imposed density gradient is considered. This configuration is a simplified model to study fluid flow in a directional solidification cell subjected to external accelerations, such as those encountered in a typical microgravity environment. The effect of both periodic deterministic disturbances and narrow band noise are considered. It is found in the latter case that the mean squared displacement of a fluid element grows as a power law in time, and that the particular exponent depends on whether viscous effects are important.

Original languageEnglish (US)
Title of host publicationFluid Mechanics Phenomena in Microgravity
PublisherPubl by ASME
Pages133-138
Number of pages6
Volume174
ISBN (Print)0791810372
StatePublished - Dec 1 1993
EventProceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA
Duration: Nov 28 1993Dec 3 1993

Other

OtherProceedings of the 1993 ASME Winter Annual Meeting
CityNew Orleans, LA, USA
Period11/28/9312/3/93

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