Vortex induced vibrations in wind -- Design criteria

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:449667

Oppen, A N ^[1]; Kvitrud, A ^[2]

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1. Statoil, Stavanger (Norway)
2. Norwegian Petroleum Directorate, Stavanger (Norway)

A design procedure with criteria for vortex induced vibrations due to wind, based on DIN 4133/Eurocode-1 and adopted for offshore conditions, is introduced. The proposal contains criteria for avoiding vortex induced vibrations and a procedure for controlling fatigue damage. A comparison with some existing design codes is given. Parameters utilized in current design practice in Norway are reviewed and some recent developments discussed. Emphasis is put on investigating the interrelation between parameters and identifying the key parameters and criteria representing boundaries for avoiding vortex induced vibrations. Special design considerations, like vortex initiated global vibrations (frame vibrations) and wake induced vibrations, are discussed. This paper may be seen as a follow-up of the paper: Wind Induced Resonant Cross-Flow Vibrations on Norwegian Offshore Flare Booms, OMAE-95, by the same authors, in which the experienced problem area and a tentative solution strategy were presented. Recent experience with vortex mitigation devices applied on flare booms is included. As an introduction, a short description of the vortex shedding phenomena is given.

• OSTI ID: 449667
• Report Number(s): CONF-9606279--; ISBN 0-7918-1490-4
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CYLINDRICAL CONFIGURATION
DESIGN
EVALUATED DATA
FLUID-STRUCTURE INTERACTIONS
MECHANICAL VIBRATIONS
OFFSHORE PLATFORMS
SAFETY ENGINEERING
SAFETY STANDARDS
THEORETICAL DATA
VORTEX FLOW
WIND LOADS