Void fraction and impact pressure caused by breaking wave impingement on a 2D tension-leg structure Conference Paper uri icon

abstract

  • Copyright © 2015 by the International Society of Offshore and Polar Engineers (ISOPE). Plunging breaker impinging on a simplified tension-leg platform (TLP) model structure was investigated in laboratory scale. The scenario of the wave impinging on the vertical wall of the model at the water surface is considered. Pressure measurements were taken at locations on the vertical wall of model above the still water level. Bubble image velocimetry (BIV) was used to reveal the aerated flow field. Fiber optic reflectometer (FOR) was applied to measure the void fraction in front of the end surface of each pressure surface. Notably, BIV, FOR, and pressure measurements were synchronized. The time evolution of the ensemble-averaged velocities, void fraction and pressure are presented. Impact coefficient with and without consideration of the correction of water density was calculated. Relationship between pressure, void fraction, and phase transition is investigated through various combinations of comparison.

author list (cited authors)

  • Chuang, W. L., Chang, K. A., & Mercier, R.

publication date

  • January 2015