hydrodynamics; vertical cylinder; Morison equation; Potential-flow theory

Hydrodynamics on an Oscillating Cylinder by Morison’s Equation

The hydro loads on a circular cylinder in an unsteady viscous flow can be determined by Morison’s Equation, a combination of an inertial term and a drag term. where are the density, mass coefficient, drag coefficient, displacement, projected area (to vertical plane), and fluid speed, respectively. For linear waves, the range of drag coefficient is …

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Hydrodynamics on Vertical Cylinder (Spar): Potential flow theory or Morison’s equation?

Hydrodynamic loads–those associated with excitation from incident waves and radiation of outgoing waves from cylinder motion–depend on whether flow separation occurs. Flow separation occurs when the Keulegan-Carpenter number, which is defined as where is the cylinder diameter, the wave period, and the amplitude of the fluid velocity normal to the cylinder, exceeds 2. The diameter …

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