COMPARISON OF 2D AND 3D SIMULATIONS OF AN OWC DEVICE IN DIFFERENT CONFIGURATIONS
ICCE 2014 Cover Image
PDF

Keywords

OWC
CFD
3D simulations

How to Cite

Kamath, A., Bihs, H., & Arntsen, ˜ivind A. (2014). COMPARISON OF 2D AND 3D SIMULATIONS OF AN OWC DEVICE IN DIFFERENT CONFIGURATIONS. Coastal Engineering Proceedings, 1(34), structures.66. https://doi.org/10.9753/icce.v34.structures.66

Abstract

The oscillating water column (OWC)device is a wave energy converter which converts the work done by the air column in a partially submerged pneumatic chamber into a electrical energy. This paper carries out numerical simulations using a computation fluid dynamics model to study the motion of the free surface inside the chamber in two different configurations of the device and also in two- and three-dimensions. It is observed that the 2D and 3D simulations provide the same results for the motion of the free surface and thus computationally cheaper 2D simulations can be employed to study the hydrodynamics of the OWC device. It is also observed that an asymmetrical device produces higher oscillation of the free surface in the chamber as it does not allow transmission of the wave across the device as in a symmetrical configuration.
https://doi.org/10.9753/icce.v34.structures.66
PDF

References

P. A. Berthelsen and O. M. Faltinsen. A local directional ghost cell approach for incompressible viscous flow problems with irregular boundaries. Journal of Computational Physics, 227:4354-4397, 2008.

H. Bihs. Three-dimensional numerical modeling of local scouring in open channel flow. PhD thesis No. 127, Department of Hydraulic and Environmental Engineering, Norwegian University of Science and Technology, Trondheim, Norway, 2011.

A. Chorin. Numerical solution of the Navier-Stokes equations. Mathematics of Computation, 22:745-762, 1968.

E. Didier, J. M. Paixa ̃o Conde, and P. R. F. Teixeira. Numerical simulation of an oscillating water column wave energy convertor with and without damping. In Proc., International Conference on Computational Methods in Marine Engineering, 2011.

P. A. Durbin. Limiters and wall treatments in applied turbulence modeling. Fluid Dynamics Research, 41: 1-18, 2009.

A. P. Engsig-Karup. Unstructured nodal DG-FEM solution of high-order boussinesq-type equations. PhD thesis, Technical University of Denmark, Lyngby, 2006.

D. V. Evans. Oscillating water column wave energy convertors. IMA Journal of Applied Mathematics, 22: 423-433, 1978.

D. V. Evans. Wave power absorption by systems of oscillating surface pressure distributions. Journal of Fluid Mechanics, 114:481-499, 1982.

A. Harten. High resolution schemes for hyperbolic conservation laws. Journal of Computational Physics, 49:357-393, 1983.

T. Höhne and C. Vallée. Numerical prediction of horizontal stratified flows. In Proc., 6th International Conference on CFD in Oil and Gas, Metallurgical and Process industries, Trondheim, 2008.

K. Hong, S. H. Shin, D. C. Hong, H. S. Choi, and S. W. Hong. Effects of shape parameters of owc chamber in wave energy absorption. In Proc., 17th International Offshore and Polar Engineering Conference, Lisbon, 2007.

G. S. Jiang and C. W. Shu. Efficient implementation of weighted ENO schemes. Journal of Computational Physics, 126:202-228, 1996.

W. Koo and M. H. Kim. Nonlinear NWT simulation for oscillating water column wave energy convertor. In Proc., 29th International Conference on Ocean, Offshore and Arctic Engineering, Shanghai, 2010.

J. Larsen and H. Dancy. Open boundaries in short wave simulations - a new approach. Coastal Engineering, 7:285-297, 1983.

Z. Liu, B. Hyun, and K. Hong. Application of numerical wave tank to owc air chamber for wave energy conversion. In Proc., 18th International Offshore and Polar Engineering Conference, Vancouver, 2008.

S. Mayer, A. Garapon, and L. S. Sørensen. A fractional step method for unsteady free surface flow with applications to non-linear wave dynamics. International Journal for Numerical Methods in Fluids, 28: 293-315, 1998.

F. R. Menter. Two-equation eddy-viscosity turbulence models for engineering applications. The American Institute of Aeronautics and Astronautics Journal, 32:1598-1605, 1992.

M. T. Morris-Thomas, R. J. Irvin, and K. P. Thiagarajan. An investigation into the hydrodynamic efficiency of an oscillating water column. Journal of Offshore Mechanics and Arctic Engineering, 129:273-278, 2007.

C. S. Peskin. Flow patterns around the heart valves. Journal of Computational Physics, 10:252-271, 1972.

A. J. N. A. Sarmento. Wave flume experiments on two-dimensional oscillating water column wave energy devices. Experiments in Fluids, 12:286-292, 1992.

A. J. N. A. Sarmento and A. F. O. Falcão. Wave generation by an oscillating surface pressure and its application in wave energy extraction. Journal of Fluid Mechanics, 150:467-485, 1985.

U. Senturk and A. Ozdamar. Modelling the interaction between water waves and the oscillating water

column wave energy device. Mathematical and Computational Applications, 16(3):630-640, 2011.

M. Sussman, P. Smereka, and S. Osher. A level set approach for computing solutions to incompressible

two-phase flow. Journal of Computational Physics, 114:146-159, 1994.

K. Thiruvenkatasamy and S. Neelamani. On the efficiency of wave energy caissons in array. Applied Ocean

Research, 19:61-72, 1997.

Y. H. Tseng and J. H. Ferziger. A ghost-cell immersed boundary method for flow in complex geometry.

Journal of Computational Physics, 192:593-623, 2003.

H. van der Vorst. BiCGStab: A fast and smoothly converging variant of Bi-CG for the solution of nonsym-

metric linear systems. SIAM Journal on Scientific and Statistical Computing, 13:631-644, 1992.

D. C. Wilcox. Turbulence modeling for CFD. DCW Industries Inc., La Canada, California., 1994.

Y. Zhang, Q. P. Zou, and D. Greaves. Air-water two phase flow modelling of hydrodynamic performance of an oscillating water column device. Renewable Energy, 41:159-170, 2012.

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.