A NUMERICAL INVESTIGATION OF THE UNSTEADY FLUID FORCE INDUCED IN THE ANNULAR DIFFUSER BY THE OSCILLATING INNER CYLINDER

Authors
IZUMI H KAWATA Y TANIGUCHI N KOBAYASHI T
Citation
H. Izumi et al., A NUMERICAL INVESTIGATION OF THE UNSTEADY FLUID FORCE INDUCED IN THE ANNULAR DIFFUSER BY THE OSCILLATING INNER CYLINDER, Journal of wind engineering and industrial aerodynamics, 46-7, 1993, pp. 577-585
Citations number
6
Categorie Soggetti
Mechanics
Journal title
Journal of wind engineering and industrial aerodynamics → ACNP
ISSN journal
01676105
Volume
46-7
Year of publication
1993
Pages
577 - 585
Database
ISI
SICI code
0167-6105(1993)46-7:<577:ANIOTU>2.0.ZU;2-H
Abstract
A numerical simulation technique with the moving grid system has been developed for the flow analysis of the boundary oscillating problem. T his technique is applied to flow simulations in an annular diffuser wi th an oscillating inner cylinder. Two- and three-dimensional analyses have been examined and the unsteady flow-induced forces have been esti mated. A negative damping force which may promote vibrations can be al so predicted in some conditions.