A Caltech Library Service

Finite-Amplitude Interfacial Waves

Saffman, P. G. (1983) Finite-Amplitude Interfacial Waves. In: Waves on Fluid Interfaces. Academic Press , New York, NY, pp. 1-15. ISBN 978-0-12-493220-3.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


The gravity waves at the interface between two uniform, unbounded fluids of different densities in the presence of a current or relative horizontal velocity have been considered. The fluids are supposed to be immiscible, incompressible, and inviscid; and the motion is assumed to be irrotational. This chapter discusses the properties and existence of finite amplitude two-dimensional, periodic waves of permanent form that propagate steadily without change of shape. “Two-dimensional” means that the flow field depends only on the horizontal direction of propagation. In the field of surface gravity waves, which is the limit of the present study when the density of the upper fluid is zero, it has been found that three-dimensional waves of permanent form exist and are observed experimentally. Such waves would also exist and be important for interfacial waves. For the purpose of calculating steady waves, there is no loss of generality in taking the speed of propagation parallel to the current, because an arbitrary constant transverse velocity might be linearly superposed on any two-dimensional steady wave without affecting its properties. The wave can be reduced to rest by choosing a frame of reference moving with the wave. The problem is then to calculate steady irrotational solutions of the Euler equations that satisfy continuity of pressure across a common streamline.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Additional Information:© 1983 Academic Press, Inc. Published by Elsevier Inc.
Record Number:CaltechAUTHORS:20170802-090558987
Persistent URL:
Official Citation:P.G. Saffman, FINITE-AMPLITUDE INTERFACIAL WAVES, In Waves on Fluid Interfaces, edited by RICHARD E. MEYER,, Academic Press, 1983, Pages 1-15, ISBN 9780124932203, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79742
Deposited By: Tony Diaz
Deposited On:02 Aug 2017 17:30
Last Modified:15 Nov 2021 17:50

Repository Staff Only: item control page