Vortex shedding induced dynamic response of marine risers
An analytical model to predict the dynamic response of a riser in regular waves or in current to vortex shedding-induced lift forces is described. The riser is treated as a continuous beam under tension. A modal superposition scheme is used to solve the linearized equation of motion in the frequency domain. The excitation lift force is represented by a harmonic function with a frequency equal to the dominant vortex shedding frequency. Empirical correlations are used to determine the lift coefficients and shedding frequencies along the riser. Lift amplification is considered at or near the ''lock-in'' conditions. The fluid resistance to riser oscillations is represented by a Morison's equation-type expression.
- Research Organization:
- Brown and Root Inc., Houston, TX
- OSTI ID:
- 6221449
- Journal Information:
- J. Energy Resour. Technol.; (United States), Vol. 106:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Some recent studies of vortex shedding with application to marine tubulars and risers
A fast multi-fidelity method with uncertainty quantification for complex data correlations: Application to vortex-induced vibrations of marine risers
Related Subjects
MARINE RISERS
FLOW MODELS
HYDRODYNAMICS
RESPONSE FUNCTIONS
FREQUENCY DEPENDENCE
MECHANICAL VIBRATIONS
VORTEX FLOW
WATER CURRENTS
WAVE FORCES
CURRENTS
FLUID FLOW
FLUID MECHANICS
FUNCTIONS
MATHEMATICAL MODELS
MECHANICS
PIPES
420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
423000 - Engineering- Marine Engineering- (1980-)