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Paula Agudelo Carlos Hoyos

Street Canyon Modeling (using Dr. Nenes Model ). Paula Agudelo Carlos Hoyos. 11/26/2003. The Idea. H. W. Formulation of the problem geometry. The Model. Numerically solve the Navier-Stokes equations by using a finite volume descretization formulation.

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Paula Agudelo Carlos Hoyos

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  1. Street Canyon Modeling (using Dr. Nenes Model ) Paula Agudelo Carlos Hoyos 11/26/2003

  2. The Idea H W Formulation of the problem geometry

  3. The Model Numerically solve the Navier-Stokes equations by using a finite volume descretization formulation. The k - epsilon model consists of the turbulent kinetic energy equation The codes are also capable of solving for turbulent flows: the standard two-parameter k-epsilon model can be used to estimate the Reynolds stresses. In the implementation of this model the Kolmogorov - Prandtl expression for the turbulent viscosity is used and the dissipation rate equation “Eddy diffusivity” http://nenes.eas.gatech.edu/CFD/index.html

  4. Case 1

  5. Laminar Case

  6. Case 2

  7. Case 2 (V=3m/s)

  8. Laminar Case

  9. Case 3

  10. Case 4

  11. Case 5

  12. Case 6

  13. Case 6 (source away from the building )

  14. Scaling Under same atmospheric conditions building height becomes essential in the TKE generation!!

  15. Dispersion depending on W/H ratio

  16. Dispersion depending on Separation

  17. Comparison with The microscale model MIMO,

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