A Study of the Effects of Different Urban Wind Models on Dispersion Patterns Using Joint Urban 2003 Data

摘要: The Quick Urban & Industrial Complex (QUIC) Dispersion Modeling System has been developed to rapidly compute the transport and dispersion of toxic agent releases in vicinity buildings. It is composed a wind solver, an 'urbanized' Lagrangian random-walk model, graphical user interface. QUIC two different models: (a) QUIC-URB empirically-based diagnostic model (b) QUIC-CFD (RANS) based on 3D Reynolds-Averaged Navier-Stokes equations. In this paper, we discuss effect models patterns dense built-up areas. model-computed from urban models- are used drive model. concentration fields then compared measurements Oklahoma City Joint 2003 field experiment. produces high-resolution 3-D mean around buildings, addition deposition ground building surfaces. options for release types, including point, moving line, area, volumetric sources, as well gas, explosive buoyant rise, multi-particle size, bioslurry, two-phase releases. Other features include indoor infiltration, pressure outer grid simulations, vegetative canopies, population exposure calculations. hasmore » biological sensor siting cities, vulnerability assessments heavier-than-air chemical at industrial facilities, clean-up radiological dispersal device (RDD) cities (e.g., see Linger et al., 2005; Brown, 2006a, b). also dust studies (Bowker 2007a) impact highway sound barriers vehicle emissions 2007b).« less