DOI QR코드

DOI QR Code

Verification of a tree canopy model and an example of its application in wind environment optimization

  • Yang, Yi (State Key Laboratory of Subtropical Building Science, South China University of Technology) ;
  • Xie, Zhuangning (State Key Laboratory of Subtropical Building Science, South China University of Technology) ;
  • Tse, Tim K.T. (Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology) ;
  • Jin, Xinyang (Center of Wind Engineering Research, China Academy of Building Research) ;
  • Gu, Ming (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
  • 투고 : 2011.02.24
  • 심사 : 2011.10.16
  • 발행 : 2012.09.25

초록

In this paper, the method of introducing additional source/sink terms in the turbulence and momentum transport equations was applied to appropriately model the effect of the tree canopy. At first, the new additional source term for the turbulence frequency ${\omega}$ equation in the SST k-${\omega}$ model was proposed through theoretical analogy. Then the new source/sink term model for the SST k-${\omega}$ model was numerically verified. At last, the proposed source term model was adopted in the wind environment optimal design of the twin high-rise buildings of CABR (China Academy of Building Research). Based on the numerical simulations, the technical measure to ameliorate the wind environment was proposed. Using the new inflow boundary conditions developed in the previous studies, it was concluded that the theoretically reasonable source term model of the SST k-${\omega}$ model was applicable for modeling the tree canopy flow and accurate numerical results are obtained.

키워드

참고문헌

  1. Bariae, E., Dzijan, I. and Kozmar, H. (2010), "Numerical simulation of wind characteristics in the wake of a rectangular building submitted to realistic boundary layer conditions", Trans. Famena, 34(3), 1-10.
  2. Blocken, B., Stathopoulos, T. and Carmeliet, J. (2007), "CFD simulation of the atmospheric boundary layer: wall function problems", Atmos. Environ., 41(2), 238-252. https://doi.org/10.1016/j.atmosenv.2006.08.019
  3. Blocken, B., Roels, S. and Carmeliet, J. (2004), "Modification of pedestrian wind comfort in the Silvertop Tower passages by an automatic control system", J. Wind Eng. Ind. Aerod., 92(10), 849-873. https://doi.org/10.1016/j.jweia.2004.04.004
  4. Blocken, B. and Carmeliet, J. (2008), "Pedestrian wind conditions at outdoor platforms in a high-rise apartment building: generic sub-configuration validation, wind comfort assessment and uncertainty issues", Wind Struct., 11(1), 51-70. https://doi.org/10.12989/was.2008.11.1.051
  5. Franke, J., Hellsten, A., Schlunzen, H. and Carissimo, B. (2007), Best practice guideline for the CFD simulation of flows in the urban environment, COST Office, Brussels, http://www.mi.uni-hamburg.de/Official-Documents.5849.0.html
  6. Gorle, C., van Beeck, J. and Rambaud, P. (2010), "Dispersion in the wake of a rectangular building: validation of two reynolds-averaged navier-stokes modelling approaches", Boundary-Lay. Meteorol., 137(1), 115-133. https://doi.org/10.1007/s10546-010-9521-0
  7. Green, S.R. (1992), "Modelling turbulent air flow in a stand of widely-spaced trees", Int. J. Comput. Fluid D., 5, 294-312.
  8. Kozmar, H. (2011), "Wind-tunnel simulations of the suburban ABL and comparison with international standards", Wind Struct., 14(1), 15-34. https://doi.org/10.12989/was.2011.14.1.015
  9. Kurotani Y., Kiyota N. and Kobayashi S. (2002), Windbreak effect of Tsuijimatsu in Izumo Part 2, Summaries of technical papers of annual meeting, AIJ Environmental Engineering I (in Japanese), 745-746.
  10. Labovsky, J. and Jelemensky, L. (2011), "Verification of CFD pollution dispersion modelling based on experimental data", J. Loss Prevent.Proc., 24(2), 166-177. https://doi.org/10.1016/j.jlp.2010.12.005
  11. Liu, J., Chen, J.M., Black, T.A. and Novak, M.D. (1996), "E-$\varepsilon$ modelling of turbulent air flow downwind of a model forest edge", Bound-Lay.Meteorol., 77(1), 21-44. https://doi.org/10.1007/BF00121857
  12. Menter, F.R. (1994), "Two-equation eddy-viscosity turbulence models for engineering applications", AIAA J., 32(8), 1598-1605. https://doi.org/10.2514/3.12149
  13. Mochida, A., Yoshino, H., Iwata, T. and Tabata, Y. (2006), "Optimization of tree canopy model for CFD prediction of wind environment at pedestrian level", Proceedings of the 4th International Symposium of Computational Wind Engineering , Yokohama, 561-564.
  14. Mochida, A., Tabata, Y., Iwatab, T. and Yoshino, H. (2008), "Examining tree canopy models for CFD prediction of wind environment at pedestrian level", J. Wind Eng. Ind. Aerod., 96(10-11), 1667-1677. https://doi.org/10.1016/j.jweia.2008.02.055
  15. Neary, V.S. (2003), "Numerical solution of fully developed flow with vegetative resistance", J. Eng. Mech.-ASCE, 129(5), 558-563. https://doi.org/10.1061/(ASCE)0733-9399(2003)129:5(558)
  16. Pattanapol, W., Wakes Sarah, J., Hilton Michael, J. and Dickinson Katharine, J.M. (2008), "Modeling of surface roughness for flow over a complex vegetated surface", J. Math.Phys., 2(1), 18-26.
  17. O'Sullivan, J.P., Archer, R.A. and Flay, R.G.J. (2011), "Consistent boundary conditions for flows within the atmospheric boundary layer", J. Wind Eng. Ind. Aerod., 99, 65-77. https://doi.org/10.1016/j.jweia.2010.10.009
  18. Svensson, U. and Haggkvist, K. (1990), "A two-equation turbulence model for canopy flows", J. Wind Eng. Ind. Aerod., 35, 201-211. https://doi.org/10.1016/0167-6105(90)90216-Y
  19. Sogachev, A. and Panferov, O. (2006), "Modification of two-equation models to account for plant drag", Bound-Lay.Meteorol., 121(2), 229-266. https://doi.org/10.1007/s10546-006-9073-5
  20. Versteeg, H.K. and Malalasekera, W. (1995), An introduction to computational fluid dynamics: the finite volume method, Longman Group Ltd, UK.
  21. Yang, W., Quan, Y., Jin, X.Y., Tamura, Y. and Gu, M. (2008), "Influences of equilibrium atmosphere boundary layer and turbulence parameter on wind loads of low-rise building", J. Wind Eng. Ind. Aerod., 96(10-11), 2080-2092. https://doi.org/10.1016/j.jweia.2008.02.014
  22. Yang, Y., Gu, M. and Jin, X.Y. (2009a), "New inflow boundary conditions for modeling the neutral equilibrium atmospheric boundary layer in SST k-$\omega$ Model", Proceedings of the 7th Asia-Pacific Conference on Wind Engineering, Taipei, Taiwan.
  23. Yang, Y., Gu, M., Chen, S.Q. and Jin, X.Y. (2009b), "New inflow boundary conditions for modeling the neutral equilibrium atmospheric boundary layers in computational wind engineering", J. Wind Eng. Ind. Aerod., 97(2), 88-95. https://doi.org/10.1016/j.jweia.2008.12.001

피인용 문헌

  1. A combination method to generate fluctuating boundary conditions for large eddy simulation vol.20, pp.4, 2015, https://doi.org/10.12989/was.2015.20.4.579
  2. Wind load prediction on single tree with integrated approach of L-system fractal model, wind tunnel, and tree aerodynamic simulation vol.10, pp.7, 2012, https://doi.org/10.1063/1.5144628