Accession Number : AD0801340

Title :   THE DYNAMIC BEHAVIOR OF A FOIL IN THE PRESENCE OF A LUBRICATING FILM.

Descriptive Note : Technical rept.,

Corporate Author : AMPEX CORP REDWOOD CITY CA

Personal Author(s) : Eshel, A. ; Wildmann, M.

Report Date : SEP 1966

Pagination or Media Count : 24

Abstract : Equations for the oscillations of a foil over a lubricating fluid film are derived and are simplified by a small parameter expansion. A few particular cases are discussed, and a linearized solution is obtained for the case of a massless, perfectly flexible foil moving at a speed U over an incompressible film. The solution reveals the phenomenon that small disturbances in the film thickness, as well as symmetrical large disturbances, propagate at a speed U/2. (Author)

Descriptors :   (*FLUID MECHANICS, FILMS), (*FILMS, LUBRICANTS), (*FOILS(MATERIALS), BOUNDARY VALUE PROBLEMS), MATHEMATICAL MODELS, DIFFERENTIAL EQUATIONS, MATHEMATICAL ANALYSIS.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE