Truong Tich Thien, Sang Quang Nguyen, Bang Kim Tran


Natural energy such as wind, wave and other natural vibrations is one of the high potential renewable energy sources. The Wells turbine is based on the use of bidirectional turbines, which act as axial-flow self-rectifying turbines that employs a symmetrical blade profile and rotating unidirectionally in reciprocating airflows generated by the air chamber to extract energy from vibrations. These topics have been extensively studied both numerically and experimentally such as research on the parameters of the effects of structure, angle of attack, blade shape, etc. In this paper, numerical simulation is carried out using commercially available tool Fluent for fluid dynamics analysis and focus on oscillating predictions, with particular attention to the behavior of the flow. Based on the Numerical Wave Tank (NWT) model is simulated in a two dimensional used in this model, which is constructed mainly based on the spatially averaged Navier Stokes equation with the k-ε model for simulating the turbulence and modeled with Volume of Fluid (VOF). Axial-flow turbines system and future development as well as the proposed limitations will be discussed in detail.


Oscillating Water Column (OWC), Volumn of Fluid (VOF), dynamic flow, wave energy, Computational fluid dynamics (CFD).

Full Text:



Sarmento A. J. N. A. and Falcao A. F. de O. , Wave generation by an oscillating surface pressure and its application in wave energy extraction, Journal of Fluid Mechanics, 150, p. 467-485, 1984.

Evans D. V., The oscillating water column wave energy device, Journal of the Institute of Mathematics and its Applications, 22, p. 423-433, 1978.

URSELL, E, R. G. DEAN, and Y. S. Yu, Forced Small Amplitude Water Waves: A Comparison of Theory and Experiment, J. Fluid Mech., Vol. 7, Pt.. 1,1960.

Evans D. V. and Porter R., Hydrodynamic Characteristics of an Oscillating Water Column Wave Energy Device, Applied Ocean Research 17, p. 155-164, 1995.

Evans D. V. and Porter R., Efficient Calculation of , Hydrodynamic Properties of OWC-type devices, J. Offshore Mech. Arctic Eng. 119, p. 210-218, 1997.

Zhang Y., Zou Q-P., Deborah G. Air water two-phase flow modeling of hydrodynamic performance of an oscillating water column device. Renewable Energy, Volume 41, May 2012, Pages 159-170.

Torresi, M., Camporeale, S.M., Strippoli, P.D., Pascazio, G.: Accurate numerical simulation of a high solidity Wells turbine, Renewable Energy, 33 (2008), 4, 735-747.

Kim T., Takao M., Setoguchi T., Kaneko K. and Inoue M., Performance comparison of turbines for wave power conversion, International Journal of Thermal Sciences 40, p. 681-689, 2001.

Setoguchi T., Santhakumar S., Takao M., Kim T. H. and Kaneko K., A modified Wells turbine for wave energy conversion, Renewable Energy 28, p. 79-91, 2003.

GOMES, M. das N., Olinto, C. R., Rocha, L. A. O., Souza, J. A. and Isoldi, L. A., (2009) - "Computational modeling of a regular wave tank". Engenharia Térmica, v. 8, pp. 44-50.

GOMES, M. das N., Nascimento, C. D., Bonafini, B. L., Dos Santos, E. D, Isoldi, L. A. and Rocha, L. A. O., (2012) - "Two-dimensional geometric optimization of an oscillating water column converter in laboratory scale". Engenharia Térmica, v.11, pp. 30-36.

GOMES, M. das N., Dos Santos, E. D, Isoldi, L. A. and Rocha, L. A. O., (2013) - "Two-dimensional geometric optimization of an oscillating water column converter of real scale". In: 22nd International Congress of Mechanical Engineering (COBEM), Ibero Latin American Congress on Computational Methods in Engineering (CILAMCE), pp. 1-12.

Horko, M., 2007, CFD Optimization of an Oscillating Water Column Energy Converter, Master Thesis, Science and Engineering, School of Mechanical Engineering, University of Western, Australian.

Liu, Z., Hyun B., and Hong, K., 2008a, Application of Numerical Wave Tank to OWC Air Chamber for Wave Energy Conversion, in: International Offshore and Polar Engineering Conference, Vancouver, BC, Canada, pp. 350-356.

Liu, Z., Hyun B., and Jin, J., 2008b , Numerical Prediction for Overtopping Performance of OWEC, Journal of the Korean Society for Marine Environmental Engineering, Vol. 11, No. 1, pp. 35-41.

Liu, Z., Hyun B., and Hong, K., 2011, Numerical Study of Air Chamber for Oscillating Water Column Wave Energy Convertor, China Ocean Eng., Vol. 25, pp.169-178.

Lopes, N. R., Sant’Anna, F. S. P., Gomes, M. N., Souza, J. A., Teixeira, P. R. F., Dos Santos, E. D., Isoldi, L. A., and Rocha, L. A. O., 2012, Constructal Design Optimization of the Geometry of an Oscillating Water Column Wave Energy Converter (OWC-WEC), in: Proceedings Constructal Law Conference, UFRGS, Porto Alegre.

FLUENT, (2007) - "User's Manual". ANSYS, Inc.

Dean, R.G., Dalrymple, R.A. Water Wave Mechanics for Engineers and Scientists, World Scientific Publishing Company, 1991.

DOI: Display counter: Abstract : 124 views. PDF : 34 views.


  • There are currently no refbacks.

budidaya tani

Index: Google Scholar; Crossref; VCGate; Asean Citation Index

Published by Vietnam Academy of Science and Technology