The mechanism for surface wave instability in film flow down an inclined plane
作者:
R. E. Kelly,
D. A. Goussis,
S. P. Lin,
F. K. Hsu,
期刊:
Physics of Fluids A
(AIP Available online 1989)
卷期:
Volume 1,
issue 5
页码: 819-828
ISSN:0899-8213
年代: 1989
DOI:10.1063/1.857379
出版商: AIP
数据来源: AIP
摘要:
The equation governing the average rate of change of disturbance kinetic energy is evaluated for various wavenumbers at fixed values of Reynolds number, Weber number, and angle of inclination. The dominant energy production term is associated with the work done by the perturbation shear stress at the free surface. The mechanism of instability, however, is associated with a shift of perturbation vorticity relative to the surface displacement resulting from advection.
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