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Study of oscillatory pneumatic damping in the air duct for an OWC type wave energy device
- Authors
- Choi, H.S.; Hong, S.W.; Kim, J.-H.; Hong, S.Y.; Hong, D.C.; Lew, J.M.
- Issue Date
- 2004
- Keywords
- Oscillating Duct Flow; OWC; Pneumatic damping; Wave Energy Device
- Citation
- Proceedings of the Sixth (2004) ISOPE Pacific/Asia Offshore Mechanics Symposium, pp 209 - 215
- Pages
- 7
- Journal Title
- Proceedings of the Sixth (2004) ISOPE Pacific/Asia Offshore Mechanics Symposium
- Start Page
- 209
- End Page
- 215
- ISSN
- 0000-0000
- Abstract
- The effect of frequency and amplitude of the OWC (Oscillating Water Column) motion on the nonlinear reaction forces in an air duct are studied experimentally. Experimental OWC model is idealized as a simple circular cylinder with an orifice type air duct located at the middle of the top rid. Reaction forces due to forced heave oscillation are measured and analyzed. By subtracting the effect of inertia forces and restoring forces, pneumatic damping force and added spring force are deduced. The effects of the frequency and amplitude of the heave motion are discussed. Also, the effects of solidity of the duct on the reaction forces are discussed. Copyright ？ 2004 by The International Society of Offshore and Polar Engineers.
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