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Computation of convective flow with gravity modulation in rectangular cavitiesIn this work, a computational study is presented for the investigation of gravity modulation (g-jitter) effects in thermally driven cavity flows at terrestrial and microgravity environments. The two-dimensional, time-dependent Navier-Stokes equations are numerically integrated by a time-split method using direct matrix solvers. Computations at terrestrial gravity are utilized to assess the effects of adiabatic side-wall boundary conditions as well as the full nonlinearity of the governing equations on the sinusoidally forced Benard problem studied by Gresho and Sani. The low-g calculations focus on the establishment of critical frequency ranges and consider the effects of modulation direction and randomness. The applicability of linear analysis in the excitable frequency range at low g is also discussed.
Document ID
19900056260
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Biringen, S.
(Colorado, University Boulder, United States)
Danabasoglu, G.
(Colorado Univ. Boulder, CO, United States)
Date Acquired
August 14, 2013
Publication Date
July 1, 1990
Publication Information
Publication: Journal of Thermophysics and Heat Transfer
Volume: 4
ISSN: 0887-8722
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 88-3727
Accession Number
90A43315
Funding Number(s)
CONTRACT_GRANT: NAGW-951
Distribution Limits
Public
Copyright
Other

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