||CMES: Computer Modeling in Engineering & Sciences, Vol. 1, No. 2, pp. 133-142, 2000
||Full length paper in PDF format. Size = 3,121,055 bytes
||wavy wall, film flow, resonance
||Laminar, gravity-driven flow of a liquid down an inclined
wall with large-amplitude sinusoidal corrugations is studied
numerically by a spectral spatial discretization method. The
synchronous resonance between the wall and the free surface is
investigated for corrugations with wavelength 0.002$m$, which
-- according to linear theory -- lead to strongest interaction. Free
surface profile and flow structure are studied as a function of the
film Reynolds number and the wall amplitude. Streamline patterns are
computed and conditions leading to flow reversal are established.
The distribution of the shear stress along the wall and of the
normal velocity gradient close to the free surface are computed and
related to heat/mass transport.