TRIS Online Record

Title	PREDICTION OF SELF-INDUCED VIBRATIONS IN INCOMPRESSIBLE TURBULENT FLOWS AROUND CYLINDERS
Accession No	00706319
Authors	Braza, M; Persillon, H
Publication Date	19920000
Languages	English
Abstract	The onset of turbulent flow at moderate Reynolds numbers are predicted by a direct 2-D numerical simulation and by an unsteady turbulence model, respectively. The global dynamic characteristics of the flow (mean drag, Strouhal number, oscillating lift coefficient) are accurately predicated, in agreement with the physical experiment. An original type of large-eddy simulation is developed for the unsteady turbulence modelling of flows with coherent structures and modified closure assumptions for the calculation of the unsteady eddy-viscosity are suggested. The results show a good agreement with physical experiments (Re=40,000) for the wake flow past a rectangular body. Especially, under the present unsteady turbulence modelling it is shown that the dynamic characteristics of the organised, alternating eddies are predicted satisfactorily.
Supplemental Information	ISOPE 1992, 2nd Intl Offshore & Polar Engng Conf; 14-19 June 1992; San Francisco, USA. Sponsored by Intl Soc Offshore & Polar Engrs (ISOPE) et al. Procs. Pubs by ISOPE, ISBN 1-880653-03-6. Vol III, p 284 [9 p, 24 ref, 1 tab, 14 fig]
TRT Terms	Cylindrical bodies ; Flow ; Turbulence ; Vibration
Other Terms	Turbulent flow
Document Source	British Maritime Technology Source Data: 93092160
TRIS Files	MRIS
Database	TRIS Online

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