Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-27T14:07:14.265Z Has data issue: false hasContentIssue false

Laminar film flow on a cylindrical surface

Published online by Cambridge University Press:  29 March 2006

Ernst Becker
Affiliation:
Institut für Mechanik der Technischen Hochschule Darmstadt, D-6100 Darmstadt, Hochschulstr. 1, Germany

Abstract

The paper deals with steady laminar film flow which is set up at the cylindrical surface of an idealized horizontal ‘road’ when homogeneous ‘rain’ is falling onto the road in a vertical downward direction. It is shown that a particular solution of the Navier-Stokes equations is possible for which the depth of the liquid film is constant. In that case the Navier-Stokes equations reduce to the equations governing plane stagnation-point flow. However, the boundary conditions differ from those for the classical stagnation-point problem. Solutions for nearly inviscid flow and predominantly viscous flow are derived analytically. In particular, simple formulae for the depth of the film are found in both cases. Finally, the importance of the particular solution as a member of a whole class of solutions is discussed on the basis of a momentum integral approximation.

Type
Research Article
Copyright
© 1976 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Becker, E. 1975 Mech. Res. Comm. 2, 149810.
Beckett, P. M. & Poots, G. 1975 Mech. Res. Comm. 2, 61810.
Bøuhme, G. & Becker, E. 1972 J. Appl. Math. Phys. (Z. angew. Math. Phys.) 23, 983810.
Cheng, M. M. 1961 A.S.M.E. J. Heat Transfer, 83, 55810.
Schleicher, U. 1975 Regenwasserfilme auf schwach geneigten Flächen. Dissertation, Darmstadt D 17.
Schlichting, H. 1965 Grenzschichttheorie, 5th edn, Karlsruhe: G. Braun.
Shen, H. W. & Li, R. M. 1973 A.S.C.E. J. Hydr. Div. 99, 771810.
Yen, B. C. & Wenzel, H. G. 1970 A.S.C.E. J. Hydr. Div. 96, 801810.
Yoon, Y. N. & Wenzel, H. G. 1971 A.S.C.E. J. Hydr. Div. 97, 1367810.