EFD Seminar: "THERMOFLUID DYNAMICS OF CITIES" 4/16
04/16/2008 - 4:40pm
04/16/2008 - 5:30pm
Etc/GMT-7
THERMOFLUID DYNAMICS OF CITIES
by
R.E. Britter
Dept of Engineering, University of Cambridge, Trumpington St., Cambridge
CB2 1PZ 01223-332643,
We have developed parameterisations for various flow variables within urban areas that may be useful for many applications from pedestrian comfort, building infiltration, urban air quality through to urban climatology. The parameterisations are based on spatially averaged variables. Providing the statistics of spatial and temporal variability, that is, for example, how much the turbulence levels in a region vary with position in that region and how much they vary with changing averaging times. This extends the parameterisations’ usefulness considerably. Specifically they include parameterisations for the mean wind profile, the characteristic advection velocity within the urban canopy, the exchange velocity between the urban canopy and the flow aloft, the components of turbulence within and above the canopy, the temperature within the canopy and variables linked to other transport processes. The parameterisations are based on a combination of analysis, generic computational fluid dynamics and laboratory and field experiments from many sources.
Wednesday, April 16, 2008
ISTB 2, RM 299
4:40p - 5:30p