36th AIAA Fluid Dynamics Conference and Exhibit · 2006 · 17 citations · 9 references
Natural SciencesComputational EngineeringAerodynamicsAir PollutionComputational Fluid DynamicsAerosol PhysicsAerosol ScienceAir Pollution ModelingComputational AerodynamicsTurbulent FlowUrban Boundary LayersAerosol Dynamics ModelingAerosol ModelingAerosol TransportMach NumberScalar TransportTurbulence ModelingUnsteady FlowUnsteady Flow Dynamics
The objective of this study is to demonstrate the capability of an arbitrary mach number algorithm to predict aerosol propagation in an urban environment. A preconditioned approach is applied to an unstructured mesh to determine accurately the highly unsteady turbulent flow field about the urban setting. DES modifications are implemented into a hybrid k − , k − ω turbulence model and evaluated. A scalar transport model is used to release and to advect the aerosol agent through the urban landscape. Comparisons between RANS and DES turbulence modeling are presented for multiple agent release scenarios.
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