A Study on the Annular Leakage-Flow-Induced Vibrations. 1st Report. Stability for Translational and Rotational Single-Degree-of-Freedom Systems

Autor:	Dong Wei Li, Shinji Hayama, Shigehiko Kaneko
Rok vydání:	1999
Předmět:	Physics::Fluid Dynamics Physics Pressure drop Acceleration Vortex-induced vibration Mechanical Engineering Fluid dynamics Cylinder Mechanics Condensed Matter Physics Displacement (fluid) Instability Choked flow
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 65:2251-2256
ISSN:	1884-8346 0387-5016
DOI:	10.1299/kikaib.65.2251
Popis:	This study reports the stability of annular leakage-flow-induced vibrations. The pressure distribution of fluid between a fixed outer cylinder and a vibrating inner cylinder was obtained in the case of a translationally and rotationally coupled motion of the inner cylinder. The unsteady fluid force acting on the inner cylinder in the case of translational and rotational single degree-of-freedom vibrations was then expressed in terms proportional to the acceleration, velocity, and displacement. Then the critical flow rate (at which stability was lost) was determined for an annular leakage-flow-induced vibration. Finally, the stability was investigated theoretically. It is known that instability will occur in the case of a divergent passage, but the critical flow rate depends on the passage increment in a limited range: the eccentricity of the passage and the pressure loss factor at the inlet of the passage lower the stability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bd33c3a535526975841268db64387825 https://doi.org/10.1299/kikaib.65.2251 Zobrazit plný text záznamu