Synthetic-Eddy Method for Urban Atmospheric Flow Modelling |
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| Authors: | D Pavlidis G J Gorman J L M A Gomes C C Pain H ApSimon |
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| Institution: | 1.Hanna Consultants,Kennebunkport,USA;2.Department of Meteorology,The Pennsylvania State University,University Park,USA;3.Epsilon Associates,Maynard,USA;4.Air Quality Associates,North Billerica,USA;5.NCEP,Camp Springs,USA;6.Sage Mgmt,Princeton,USA |
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| Abstract: | The computational fluid dynamics code Fluidity, with anisotropic mesh adaptivity, is used as a multi-scale obstacle-accommodating
meteorological model. A novel method for generating realistic inlet boundary conditions based on the view of turbulence as
a superposition of synthetic eddies is adopted. It is able to reproduce prescribed first-order and second-order one-point
statistics and turbulence length scales. The aim is to simulate an urban boundary layer. The model is validated against two
standard benchmark tests: a plane channel flow numerical simulation and a flow past a cube physical simulation. The performed
large-eddy simulations are in good agreement with both reference models giving confidence that the model can be used to successfully
simulate urban atmospheric flows. |
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