Vibrational instabilities at the interface separating two immiscible liquids in microgravity

Salgado Sanchez, Pablo and Yasnou, V. and Gaponenko, Y. and Mialdun, A. and Porter, Jeffrey Brent and Shevtsova, V. (2019). Vibrational instabilities at the interface separating two immiscible liquids in microgravity. In: "14th International Conference on Two-Phase systems for space and ground applications (ITTW-14) & 26th European Low Gravity Research Association Biennial Symposium and General Assembly (ELGRA-26)", 24-27 sep, Granada. pp. 34-35.

Description

Title: Vibrational instabilities at the interface separating two immiscible liquids in microgravity
Author/s:
  • Salgado Sanchez, Pablo
  • Yasnou, V.
  • Gaponenko, Y.
  • Mialdun, A.
  • Porter, Jeffrey Brent
  • Shevtsova, V.
Item Type: Presentation at Congress or Conference (Speech)
Event Title: 14th International Conference on Two-Phase systems for space and ground applications (ITTW-14) & 26th European Low Gravity Research Association Biennial Symposium and General Assembly (ELGRA-26)
Event Dates: 24-27 sep
Event Location: Granada
Title of Book: 14th International Conference on Two-Phase systems for space and ground applications (ITTW-14) & 26th European Low Gravity Research Association Biennial Symposium and General Assembly (ELGRA-26)
Date: September 2019
Subjects:
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Aeronaves y Vehículos Espaciales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A wide variety of interfacial phenomena occurs in vibrated fluid systems, depending on frequency, amplitude and forcing orientation. On earth, there is a clear qualitative difference between vertical and horizontal vibrations. Vertical vibrations can be understood as a modulation of effective gravity and may be stabilizing, as with the Rayleigh-Taylor instability (Wolf 1970), or destabilizing, as with the phenomenon of Faraday waves (Faraday 1831). Horizontal forcing, on the other hand, immediately excites harmonic waves near the container boundaries. When a critical amplitude is reached, it also excites subharmonic cross-waves (Garret, 1970). If the interface separates immiscible layers of different viscosity, vibrations can lead to frozen waves (Lyubimov, Cherepanov 1986; Talib et al. 2007), which are generally bounded by the restoring effects of gravity and interfacial tension.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainESP2015-70458-PUnspecifiedJeffrey Brent PorterControl de fluidos vibrados en microgravedad

More information

Item ID: 67234
DC Identifier: https://oa.upm.es/67234/
OAI Identifier: oai:oa.upm.es:67234
Deposited by: Memoria Investigacion
Deposited on: 10 Jun 2021 09:38
Last Modified: 10 Jun 2021 09:38
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