VDI 3783 Blatt 10-2010 PDF

Scope: The dispersion of atmospheric contaminants in the vicinity of anthropogenic sources gains more and more importance in expert practice. Emission sources can be for instance road-traffic as well as odours. Such emissions are often released in built-up areas. Here the dispersion path is strongly influenced by obstacles. The guideline represents an important component in modelling these complex dispersion relations. A simulation model is described in the guideline enabling the user to simulate the mean and three-dimensional wind field over a smooth surface in the area of obstacles like buildings, trees and dams. The typical dimensions of the computational domain are between some decametres up to some kilometres. The objective of the guideline ranges from supplying three-dimensional wind fields for dispersion simulations to planning the measuring net for flow measurements in centre city areas and to analysing possible wind field changes caused by building operations. The method described is based on mass conservation. The dynamic flow effects are reached by adequate input data for an initial wind field. These so-called diagnostic models need very little storage capacity and computational time so that large areas with a highly spatial resolution can also be simulated on a personal computer as well.

VDI 3783 Blatt 10-2010 Referenced Document

VDI 1000-2006 Richtlinienarbeit - Grundsaetze und Anleitungen
VDI 3783 Blatt 1-1987 Ausbreitung von Luftverunreinigungen in der Atmosphaere; Ausbreitung von stoerfallbedingten Freisetzungen; Sicherheitsanalyse
VDI 3783 Blatt 12-2000 Environmental meteorology - Physical modelling of flow and dispersion processes in the atmospheric boundary layer - Application of wind tunnels
VDI 3783 Blatt 8-2002 Environmental meteorology - Turbulence parameters for dispersion models supported by measurement data
VDI 3786 Blatt 2-2000 Environmental meteorology - Meteorological measurements concerning questions of air pollution - Wind
VDI 3787 Blatt 2-2008 Environmental meteorology - Methods for the human biometeorological evaluation of climate and air quality for urban and regional planning at regional level - Part I: Climate

2010 VDI 3783 Blatt 10-2010 Environmental meteorology - Diagnostic microscale wind field models - Air-flow around buildings and obstacles
2001 VDI 3783 Blatt 10-2001 Umweltmeteorologie - Diagnostische mikroskalige Windfeldmodelle - Gebaeude- und Hindernisumstroemung
2000 VDI 3783 Blatt 10-2000 Environmental meteorology - Diagnostic microscale wind field models - Air-flow around buildings and obstacles