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Study of Pollutant Dispersion in Urban Environments

Summary: Study of Pollutant Dispersion
in Urban Environments
Razvan Corneliu Carbunescu
Center for Computation and Technology
Louisiana State University
302 Johnston Hall
Baton Rouge, Louisiana 70803
Running head: Study of pollutant dispersion in urban environments
Computational simulations can aid in understanding the complex flows of environmental interests such as the
pollutant/chemical dispersion in the urban cityscapes. Computational fluid dynamics (CFD) represents the study of
fluid mechanics with the use of computer models and simulations. In this study the simulations of the complex flows
involved are created using an open-source parallel CFD framework (the Cactus CFD toolkit). The Cactus CFD
toolkit is an open-source problem solving environment for a variety of interdisciplinary fluid dynamics applications.
Specific contributions of this research study have been the implementation of Marker and Cell (MAC) method for
the governing equations, transport of passive scalars like the pollutant concentration and the use case definitions for
the pollution dispersion problems.
Canonical flows such as jets-in-crossflow (JICF) and flow past obstacles form the physical as well as modeling
building-blocks for our application. JICF from elevated sources is used as the model for pollutant release. Flow past
an arrangement of obstacles is used as the model for the urban cityscape. Results from these simulations will be


Source: Allen, Gabrielle - Department of Computer Science, Louisiana State University


Collections: Computer Technologies and Information Sciences