Instability of multi-layer fluid configurations in the presence of time-dependent accelerations in a microgravity environmentThe increasing number of research opportunities in a microgravity environment will benefit not only fundamental studies in fluid dynamics, but also technological applications such as those involving materials processing. In particular, fluid configurations which involve fluid-fluid interfaces would occur in a variety of experimental investigations. This work investigates the stability of a configuration involving fluid-fluid interfaces in the presence of a time-dependent forcing. Both periodic (g-jitter) and nonperiodic accelerations are considered. The fluid configuration is multilayered, and infinite in extent. The analysis is linear and inviscid, and the acceleration vector is oriented perpendicular to each interface. A Floquet analysis is employed in the case of the periodic forcing. In the problem of nonperiodic forcing, the resulting system of equations are integrated in time. Specific nondimensional parameters appear in each problem. The configuration behavior is investigated for a range of parameter values.
Document ID
19910034517
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lyell, M. J. (West Virginia Univ. Morgantown, VA, United States)
Roh, Michael (West Virginia University Morgantown, United States)