Browse > Article
http://dx.doi.org/10.12989/was.2014.19.1.075

CFD evaluation of a suitable site for a wind turbine on a trapezoid shaped hill  

Unchai, Thitipong (Department of Physics, Faculty of Science, Ubonratchathani Rajabhat University)
Janyalertadun, Adun (Department of Mechanical Engineering, Faculty of Engineering, Ubonratchathani University)
Publication Information
Wind and Structures / v.19, no.1, 2014 , pp. 75-88 More about this Journal
Abstract
The computational fluid dynamic is used to explore new aspects of the hill flow. This analysis focuses on flow dependency and the comparison of results from measurements and simulations to show an optimization turbulent model and the possibility of replacing measurements with simulations. The first half of the paper investigates a suitable turbulence model for determining a suitable site for a wind turbine. Results of the standard k-${\varepsilon}$ model are compared precisely with the measurements taken in front of the hilltop, The Reynolds Stress Model showed exact results after 1.0 times of hill steepness but the standard k-${\varepsilon}$ model and standard k-${\omega}$ model showed greater underestimation. In addition, velocity flow over Pha Taem hill topography and the reference geometry shape were compared to find a suitable site for a turbine in case the actual hill structure was associated with the trapezoid geometric shape. Further study of geometry shaped hills and suitable sites for wind turbines will be reported elsewhere.
Keywords
computational fluid dynamics; turbulent model; suitable site; wind turbine; trapezoid hill;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Gibson, M.M. and Launder, B.E. (1978), "Ground ejects on pressure fluctuations in the atmospheric boundary layer", J. Fluid Mech., 86, 491- 511.   DOI   ScienceOn
2 Hargreaves, D.M. and Wright, N.G. (2007), "On the use of the k-$\varepsilon$ model in commercial CFD software to model the neutral atmospheric boundary layer", J. Wind Eng. Ind. Aerod., 95(5), 355-369.   DOI   ScienceOn
3 Launder, B.E. (1989), "Second-moment closure", Int. J. Heat Fluid Fl., 10(4), 282-300.   DOI   ScienceOn
4 Launder, B.E., Reece, G.J. and Rodi, W. (1975), "Progress in the development of a reynolds-stress turbulence closure", J. Fluid Mech., 68(3), 537-566.   DOI   ScienceOn
5 Launder, B.E. and Spalding, D.B. (1972), Lectures in mathematical models of turbulence, Academic Press, London, England.
6 Ministry of Interior (2010), http://www.dopa.go.th/stat/y_stat.html. Access on 5 Nov 2011.
7 Naif, M.Al-Abbadi. (2005), "Wind energy resource assessment for five locations in Saudi Arabia", Renew Energ., 30(10), 1489-1499.   DOI
8 Undheim, O. (2005), "2D simulations of terrain effects on atmospheric flow", Proceedings of the MekIT'05.
9 Sahin, A.Z.Aksakal, A. (1998), "Wind power energy potential at the northeastern region of Saudi Arabia", Renew Energ., 14(1-4), 435-440.   DOI   ScienceOn
10 Undheim, O. (2003), "Comparison of turbulence models for wind evaluation in complex terrain", Proceedings of the Conference EWEC 2003.
11 Vogiatzis, N., Kotti, K., Spanomitsios, S. and Stoukides, M. (2004), "Analysis of wind potential and characteristics in North Aegean Greece", Renew Energ., 29(7), 1193-208.   DOI   ScienceOn
12 Al Nassar, W., Alhajraf, S., Al-Enizi, A. and Al-Awadhi, L. (2005), "Potential wind power generation in the State of Kuwait", Renew Energ., 30(14), 2149-2161.   DOI
13 Blocken, B. (2007), "CFD simulation of the atmospheric boundary layer: wall function problems", Atmos. Environ., 41(2), 238-252.   DOI   ScienceOn
14 Celik, A.N. (2003), "A statistical analysis of wind power density based on the Weibull and Rayleigh models at the southern region of Turkey", Renew. Energ., 29(4), 593-604.
15 Coelingh, J.P., Van Wijk, A.J.M. and Holtslag, A.A.M. (1996), "Analysis of wind speed observation over the North Sea", J. Wind Eng. Ind. Aerod., 61(1), 51-69.   DOI
16 Department of Alternative Energy Development and Efficiency, Ministry of Energy, Thailand (2004), http://www.eppo.go.th/index-E.html, Access on 12 Dec 2011.
17 Feregh, G.M. (1993), "Wind energy potential for Bahrain", Energy Convers. Manage, 34(6), 499-506.   DOI
18 Takahashi, T., Ohtsua, T., Yassina, M.F., Kato, S. and Murakami, S. (2002), "Turbulence characteristics of wind over a hill with a rough surface", J. Wind Eng. Ind. Aerod., 90(12-15), 1697-1706.   DOI   ScienceOn
19 Wilcox, D.C. (1998), Turbulence modeling for CFD, DCW Industries, Inc. La Canada, California.