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Issue No.09 - Sept. (2013 vol.19)
pp: 1579-1591
S. Shafii , Dept. of Comput. Sci., Univ. of California, Davis, Davis, CA, USA
H. Obermaier , Dept. of Comput. Sci., Univ. of California, Davis, Davis, CA, USA
R. Linn , Comput. Earth Sci. Group (EES-16), Los Alamos Nat. Lab., Los Alamos, NM, USA
Eunmo Koo , Comput. Earth Sci. Group (EES-16), Los Alamos Nat. Lab., Los Alamos, NM, USA
M. Hlawitschka , Deutschland, Univ. Leipzig, Leipzig, Germany
C. Garth , Fachbereich Inf., Tech. Univ. Kaiserslautern, Kaiserslautern, Germany
B. Hamann , Dept. of Comput. Sci., Univ. of California, Davis, Davis, CA, USA
K. I. Joy , Dept. of Comput. Sci., Univ. of California, Davis, Davis, CA, USA
ABSTRACT
Characterizing the interplay between the vortices and forces acting on a wind turbine's blades in a qualitative and quantitative way holds the potential for significantly improving large wind turbine design. This paper introduces an integrated pipeline for highly effective wind and force field analysis and visualization. We extract vortices induced by a turbine's rotation in a wind field, and characterize vortices in conjunction with numerically simulated forces on the blade surfaces as these vortices strike another turbine's blades downstream. The scientifically relevant issue to be studied is the relationship between the extracted, approximate locations on the blades where vortices strike the blades and the forces that exist in those locations. This integrated approach is used to detect and analyze turbulent flow that causes local impact on the wind turbine blade structure. The results that we present are based on analyzing the wind and force field data sets generated by numerical simulations, and allow domain scientists to relate vortex-blade interactions with power output loss in turbines and turbine life expectancy. Our methods have the potential to improve turbine design to save costs related to turbine operation and maintenance.
INDEX TERMS
Blades, Wind turbines, Data visualization, Feature extraction, Force, Geometry,vortices, Flow visualization, applications, wind energy, turbulence
CITATION
S. Shafii, H. Obermaier, R. Linn, Eunmo Koo, M. Hlawitschka, C. Garth, B. Hamann, K. I. Joy, "Visualization and Analysis of Vortex-Turbine Intersections in Wind Farms", IEEE Transactions on Visualization & Computer Graphics, vol.19, no. 9, pp. 1579-1591, Sept. 2013, doi:10.1109/TVCG.2013.18
REFERENCES
 [1] H. Lugt, Vortex Flow in Nature and Technology. Wiley, 1983. [2] M. Jiang, R. Machiraju, and D. Thompson, "Detection and Visualization of Vortices," The Visualization Handbook, C.D. Hansen and C.R. Johnson, eds., pp. 295-309, Elsevier, 2005. [3] S. Stegmaier, U. Rist, and T. Ertl, "Opening the can of Worms: An Exploration Tool for Vortical Flows," Proc. IEEE Visualization Conf., pp. 463-470, 2005. [4] J. Jeong and F. Hussain, "On the Identification of a Vortex," J. Fluid Mechanics, vol. 285, pp. 69-94, 1995. [5] R. Linn and E. Koo, "Determining Effects of Turbine Blades on Fluid Motion," Los Alamos Nat'l Laboratory, technical report, Patent Pending: Submitted 10-20-2008, 2008. [6] J. Reisner, V. Mousseau, A. Wyszogrodzki, and D. Knoll, "An Implicitly Balanced Hurricane Model with Physics-Based Preconditioning," Monthly Weather Rev., vol. 133, no. 4, pp. 1003-1022, 2005. [7] R. Linn, J. Winterkamp, D. Weise, and C. Edminster, "Numerical Study of Slope and Fuel Structure Effects on Coupled Wildfire Behavior," Int'l J. Wildland Fire, pp. 179-201, 2010. [8] F. Pimont, J. Dupuy, R. Linn, and S. Dupont, "Validation of Firetec Wind-Flows over a Canopy and a Fuel-Break," Int'l J. Wildland Fire, vol. 18, no. 7, pp. 775-790, 2009. [9] H. JCR, A. Wray, and P. Moin, "Eddies, Stream, and Convergence Zones in Turbulent Flows," Center for Turbulence Research Report CTR-S88, pp. 193-208, 1988. [10] U. Dallmann, "Topological Structures of Three-Dimensional Vortex Flow Separation," Proc. Am. Inst. of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conf., 1983. [11] M. Roth and R. Peikert, "A Higher-Order Method for Finding Vortex Core Lines," Proc. Conf. Visualization '98, pp. 143-150, 1998. [12] D. Kenwright and R. Haimes, "Automatic Vortex Core Detection," IEEE Computer Graphics and Applications, vol. 18, no. 4, pp. 70-74, July/Aug. 1998. [13] D. Sujudi and R. Haimes, "Identification of Swirling Flow in 3D Vector Fields," Proc. AIAA 12th Computational Fluid Dynamics Conf., 1995. [14] A. Globus, C. Levit, and T. Lasinski, "A Tool for Visualizing the Topology of Three-Dimensional Vector Fields," Proc. IEEE Second Conf. Visualization '91, pp. 33-40, 1991. [15] C. Garth, X. Tricoche, T. Salzbrunn, and G. Scheuermann, "Surface Techniques for Vortex Visualization," Proc. Eurographics - IEEE TCVG Symp. Visualization, pp. 155-164, May 2004. [16] J.C.R. Hunt, "Vorticity and Vortex Dynamics in Complex Turbulent Flows," Canadian Soc. for Mechanical Eng., Trans., vol. 11, no. 1, pp. 21-35, 1987. [17] J. Sahner, T. Weinkauf, and H. Hege, "Galilean Invariant Extraction and Iconic Representation of Vortex Core Lines," Proc. IEEE VGTC Symp. Visualization, pp. 151-160, 2005, [18] J. Sahner, T. Weinkauf, N. Teuber, and H.-C. Hege, "Vortex and Strain Skeletons in Eulerian and Lagrangian Frames," IEEE Trans. Visualization and Computer Graphics, vol. 13, no. 5, pp. 980 -990, Sept./Oct. 2007. [19] B. Singer and D. Banks, "A Predictor-Corrector Scheme for Vortex Identification," Technical Report TR-94-11, 1994. [20] D. Banks and B. Singer, "Vortex Tubes in Turbulent Flows: Identification, Representation, Reconstruction," Proc. IEEE Conf. Visualization '94, pp. 132-139, 1994. [21] D.C. Banks and B.A. Singer, "A Predictor-Corrector Technique for Visualizing Unsteady Flow," IEEE Trans. Visualization and Computer Graphics, vol. 1, no. 2, pp. 151-163, June 1995. [22] T. Schafhitzel, D. Weiskopf, and T. Ertl, "Interactive Investigation and Visualization of 3D Vortex Structures," Proc. 12th Int'l Symp. Flow Visualization, Sept. 2006. [23] T. Schafhitzel, J. Vollrath, J. Gois, D. Weiskopf, A. Castelo, and T. Ertl, "Topology-Preserving $\lambda2$ -Based Vortex Core Line Detection for Flow Visualization," Computer Graphics Forum, vol. 27, pp. 1023-1030, 2008. [24] K. Baysal, T. Schafhitzel, T. Ertl, and U. Rist, "Extraction and Visualization of Flow Features," Imaging Measurement Methods for Flow Analysis, series Notes on Numerical Fluid Mechanics and Multidisciplinary Design, W. Nitsche and C. Dobriloff, eds., vol. 106, pp. 305-314, Springer, 2009. [25] F. Post, B. Vrolijk, H. Hauser, R. Laramee, and H. Doleisch, "The State of the Art in Flow Visualisation: Feature Extraction and Tracking," Computer Graphics Forum, vol. 22, no. 4, pp. 775-792, 2003. [26] R. Hooke and T. Jeeves, ""Direct Search" Solution of Numerical and Statistical Problems," J. ACM, vol. 8, no. 2, pp. 212-229, 1961. [27] J.F. Blinn, "A Generalization of Algebraic Surface Drawing," ACM Trans. Graphics, vol. 1, no. 3, pp. 235-256, July 1982. [28] M. Brill, H. Hagen, H.-C. Rodrian, W. Djatschin, and S. Klimenko, "Streamball Techniques for Flow Visualization," Proc. IEEE Conf. Visualization '94, pp. 225-231, Oct. 1994. [29] F.C. Crow, "Shadow Algorithms for Computer Graphics," Proc. ACM Fourth Ann. Conf. Computer Graphics and Interactive Techniques (SIGGRAPH '77), pp. 242-248, 1977. [30] B. Sanderse, "Aerodynamics of Wind Turbine Wakes," technical report, Energy Research Center of the Netherlands (ECN), ECN-E-09-016, Petten, The Netherlands, 2009. [31] T. Talay, Introduction to the Aerodynamics of Flight, vol. 367, Scientific and Technical Information Office, Nat'l Aeronautics and Space Administration, 1975. [32] N. Kelley, M. Shirazi, D. Jager, S. Wilde, J. Adams, M. Buhl, P. Sullivan, and E. Patton, Lamar Low-Level Jet Project Interim Report. Nat'l Renewable Energy Laboratory, 2004.