Wind and Structures

  • 제10권2호
  • /
  • Pages.99-119
  • /
  • 2007
  • /
  • 1226-6116(pISSN)
  • /
  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Automated CFD analysis for multiple directions of wind flow over terrain

  • Morvan, Herve P. (School of Civil Engineering, the University of Nottingham) ;
  • Stangroom, Paul (Prospect) ;
  • Wright, Nigel G. (School of Civil Engineering, the University of Nottingham)
  • 투고 : 2006.06.26
  • 심사 : 2006.12.21
  • 발행 : 2007.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

Estimations of wind flow over terrain are often needed for applications such as pollutant dispersion, transport safety or wind farm location. Whilst field studies offer very detailed information regarding the wind potential over a small region, the cost of instrumenting a natural fetch alone is prohibitive. Wind tunnels offer one alternative although wind tunnel simulations can suffer from scale effects and high costs as well. Computational Fluid Dynamics (CFD) offers a second alternative which is increasingly seen as a viable one by wind engineers. There are two issues associated with CFD however, that of accuracy of the predictions and set-up and simulation times. This paper aims to address the two issues by demonstrating, by way of an investigation of wind potential for the Askervein Hill, that a good level of accuracy can be obtained with CFD (10% for the speed up ratio) and that it is possible to automate the simulations in order to compute a full wind rose efficiently. The paper shows how a combination of script and session files can be written to drive and automate CFD simulations based on commercial software. It proposes a general methodology for the automation of CFD applied to the computation of wind flow over a region of interest.

키워드

참고문헌

  1. Anderson, J. D. (2006), CFD: The Basics with Applications, McGraw Hill.
  2. ANSYS, www.ansys.com/cfx.
  3. Baetke, F. and Werner, H. (1990), "Numerical simulation of turbulent flow over surface-mounted obstacles with sharp edges and corners", J. Wind Eng. Ind. Aerodyn., 35, 129-147. https://doi.org/10.1016/0167-6105(90)90213-V
  4. Brutsaert, W. H. (1982), Evaporation in the Atmosphere, D. Reidel publisher.
  5. Castro, I. P. and Graham, J. M. R. (1999), "Numerical wind engineering: the way ahead?", Proc. Instn Civ. Engrs Structs & Bldgs, 134, 275-277. https://doi.org/10.1680/istbu.1999.31569
  6. J. Franke, C. Hirsch, A. G. Jensen, H. W. Krus, M. Schatzmann, P. S. Westbury and S. D. Miles, J. A. Wisse, N. G. Wright (2004), Recommendations on the Use of CFD in Wind Engineering, COST Action C14, Impact of Wind and Storm on City Life and Urban Environment, Brussels.
  7. Jeong, U. Y., H. M. Koh and H. S. Lee (2002), "Finite element formulation for the analysis of turbulent wind flow passing bluff structures using the RNG k-$\varepsilon$ model", J. Wind Eng. Ind. Aerodyn., 90, 151-169. https://doi.org/10.1016/S0167-6105(01)00190-8
  8. Kim, H. G. and V. C. Patel (2000), "Tests of turbulence models for wind flow over terrain with separation and recirculation", Boundary Layer Meteorology, 94, 5-21. https://doi.org/10.1023/A:1002450414410
  9. Morvan, H. P. (2004), "Automating CFD for non-experts", J. Hydroinformatics, 7(1), 17-29.
  10. Parkinson, H. G. (1987), "Measurements of Wind Flow Over Models of a Hill", Oxford, Ph D Dissertation University of Oxford.
  11. Pearce, D. L. and C. D. Ziesler (2000), "Using CFD modelling to improve the estimation of offshore wind resource", IMechE Seminar - Power Generation by Renewables, 207-219.
  12. Stangroom, P. (2004), "CFD Modelling of Wind Flow over Terrain", Nottingham, Ph D Dissertation University of Nottingham.
  13. Stangroom, P. and N. G. Wright (2003), "CFD modelling of the Askervein Hill", International Conference on Wind Engineering, Lubbock, Texas.
  14. Stathopoulos, T. (1997), "Computational wind engineering: Past achievements and future challenges", J. Wind Eng. Ind. Aerodyn., 68, 509-532.
  15. Taylor, P. A. and Teunissen, H. W. (1987), "The Askervein Hill project: Overview and background data", Boundary Layer Meteorology, 39, 15-39. https://doi.org/10.1007/BF00121863
  16. Taylor, P. A. and Teunissen, H. W. (1985), The Askervein Hill Project: Report on the Sept./Oct. 1983, Main Field Experiment, Ontario, Canada, Meteorological Services Research Branch.
  17. Taylor, P. A. and Teunissen, H. W. (1983), The Askervein Hill Project: Report on the Sept./Oct. 1982, Experiment to Study Boundary Layer Flow over Askervein, South Uist, Ontario, Canada, Meteorological Services Research Branch.
  18. Wieringa, J. (1993), "Representative roughness parameters for homogeneous terrains", Boundary Layer Meteorology, 63, 323-364. https://doi.org/10.1007/BF00705357
  19. Wright, N. G. and G. J. Easom (2003), "Non-linear k-$\varepsilon$ turbulence model results for flow over a building at fullscale", Applied Mathematical Modelling, 27(12), 1013-1033. https://doi.org/10.1016/S0307-904X(03)00123-9
  20. Yakhot, V. and Orzag, S. A. (1986), "Renormalization group analysis of turbulence: Basic theory", J. Science and Computing, 1, 3-51. https://doi.org/10.1007/BF01061452

피인용 문헌

  1. Using computational fluid dynamics to model sail interaction—the ‘slot effect’ revisited vol.97, pp.11-12, 2009, https://doi.org/10.1016/j.jweia.2009.08.005
  2. A numerical simulation of flow field in a wind farm on complex terrain vol.13, pp.4, 2007, https://doi.org/10.12989/was.2010.13.4.375