Vibrational and convective instability of a plane horizontal fluid layer at finite vibration frequencies

Autor: G. Z. Gershuni, I. O. Keller, B. L. Smorodin
Rok vydání: 1996
Předmět:
Zdroj: Fluid Dynamics. 31:666-671
ISSN: 1573-8507
0015-4628
DOI: 10.1007/bf02078217
Popis: The vibrational-convective instability of a plane horizontal fluid layer subject to longitudinal harmonic vibrations of finite frequency and transverse stratification in a static gravity field is studied. The analysis is based on the complete convection equations in the Boussinesq approximation. It is demonstrated that in the limiting case of high-frequency vibrations the results thus obtained coincide with those obtained earlier on the basis of the averaged equations. In the limiting low-frequency case the nature of the instability is quite different being due to the instability of oscillating counterstreams.
Databáze: OpenAIRE