Accession Number : AD0755017

Title :   Erzwungene Schwingungen in Geschichteten und Rotierenden Zaehen Fluessigheiten (Forced Oscillations in Stratified and Rotating Viscous Fluids),

Corporate Author : DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V FREIBURG IM BREISGAU (WEST GERMANY)

Personal Author(s) : Djordjevic,Vladan D.

Report Date : 28 AUG 1971

Pagination or Media Count : 7

Abstract : The paper deals with some examples of small forced oscillations of a body in non-homogeneous or rotating viscous fluid. In the case of a non-homogeneous fluid the probelm of oscillations in its own plane of an infinite plate is considered. The plate is set in the horizontal or vertical direction. In the first case of a simple generalization of the known solution for the homogeneous fluid is obtained, while in the second case, in those layers of the fluid where the frequency of oscillations is equal to the known critical frequency, the existence of an effect of resonance is shown, whereby the disturbances caused by the plate oscillations in these layers are extended to the infinity. In the case of a rotating fluid, which is bounded in the direction of the rotating axis. A similar effect of resonance is achieved when the frequency of oscillations is twice the angular velocity of the whole system. (Author)

Descriptors :   (*FLUID FLOW, OSCILLATION), VORTICES, VISCOSITY, ROTATION, FLAT PLATE MODELS, FREQUENCY, RESONANCE, DISKS, WEST GERMANY

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE