publication . Article . Preprint . 2009

Joint PDF Modelling of Turbulent Flow and Dispersion in an Urban Street Canyon

Jozsef Bakosi; Pasquale Franzese; Zafer Boybeyi;
Open Access
  • Published: 13 Mar 2009 Journal: Boundary-Layer Meteorology, volume 131, pages 245-261 (issn: 0006-8314, eissn: 1573-1472, Copyright policy)
  • Publisher: Springer Science and Business Media LLC
Abstract
The joint probability density function (PDF) of turbulent velocity and concentration of a passive scalar in an urban street canyon is computed using a newly developed particle-in-cell Monte Carlo method. Compared to moment closures, the PDF methodology provides the full one-point one-time PDF of the underlying fields containing all higher moments and correlations. The small-scale mixing of the scalar released from a concentrated source at the street level is modelled by the interaction by exchange with the conditional mean (IECM) model, with a micro-mixing time scale designed for geometrically complex settings. The boundary layer along no-slip walls (building si...
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Subjects
free text keywords: Atmospheric Science, Physics - Geophysics, Physics - Computational Physics, Physics - Fluid Dynamics, 85A10, 76F25, 76F55, 76M35, 37N10, Scalar (physics), Joint probability distribution, Conditional expectation, Boundary layer, Probability density function, Geology, Monte Carlo method, Mechanics, Reynolds stress, Turbulence
68 references, page 1 of 5

Bacon, D. P., Ahmad, N. N., Boybeyi, Z., Dunn, T. J., Hall, M. S., Lee, P. C. S., Sarma, R. A., Turner, M. D., III., K. T. W., Young, S. H., Zack, J. W., 2000. A dynamically adapting weather and dispersion model: The Operational Multiscale Environment Model with Grid Adaptivity (OMEGA). Mon. Weather Rev. 128, 2044-2076.

Baik, J.-J., Kim, J.-J., 1999. A numerical study of flow and pollutation dispersion characteristic in urban street canyons. J. Appl. Meteorol. 38, 1576-1589.

Bakosi, J., Franzese, P., Boybeyi, Z., 2007. Probability density function modeling of scalar mixing from concentrated sources in turbulent channel flow. Phys. Fluids 19 (11), 115106. URL http://link.aip.org/link/?PHF/19/115106/1

Bakosi, J., Franzese, P., Boybeyi, Z., 2008. A non-hybrid method for the PDF equations of turbulent flows on unstructured grids. J. Comput. Phys. 227 (11), 5896-5935.

Cassiani, M., Franzese, P., Giostra, U., 2005a. A PDF micromixing model of dispersion for atmospheric flow. Part I: development of the model, application to homogeneous turbulence and to neutral boundary layer. Atmos. Environ. 39 (8), 1457-1469. [OpenAIRE]

Cassiani, M., Franzese, P., Giostra, U., 2005b. A PDF micromixing model of dispersion for atmospheric flow. Part II: application to convective boundary layer. Atmos. Environ. 39 (8), 1471-1479. [OpenAIRE]

Cassiani, M., Giostra, U., 2002. A simple and fast model to compute concentration moments in a convective boundary layer. Atmos. Environ. 36 (30), 4717-4724. [OpenAIRE]

Cassiani, M., Radicchi, A., Albertson, J. D., 2007. Modelling of concentration fluctuations in canopy turbulence. Boundary-Layer Meteorol. 122 (3), 655-681.

Chatwin, P. C., Sullivan, P. J., 1993. The structure and magnitude of concentration fluctuations. BoundaryLayer Meteorol. 62, 269-280.

Dopazo, C., 1994. Recent developments in pdf methods. In: Libby, P. A. (Ed.), Turbulent reactive flows. Academic, New York, pp. 375-474.

Dopazo, C., O'Brien, E. E., 1974. An approach to the autoignition of a turbulent mixture. Acta Astronaut. 1, 1239-1266. [OpenAIRE]

Dreeben, T. D., Pope, S. B., 1997a. Probability density function and Reynolds-stress modeling of near-wall turbulent flows. Phys. Fluids 9 (1), 154-163. [OpenAIRE]

URL http://link.aip.org/link/?PHF/9/154/1

Dreeben, T. D., Pope, S. B., 1997b. Wall-function treatment in pdf methods for turbulent flows. Phys. Fluids 9 (9), 2692-2703.

URL http://link.aip.org/link/?PHF/9/2692/1

68 references, page 1 of 5
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