A Semi-implicit Treatment of Porous Media in Steady-State CFD.

There are many situations in computational fluid dynamics which require the definition of source terms in the Navier-Stokes equations. These source terms not only allow to model the physics of interest but also have a strong impact on the reliability, stability, and convergence of the numerics involved. Therefore, sophisticated numerical approaches exist for the description of such source terms.

Lagrangian dispersion modeling of vehicular emissions from a highway in complex terrain.

Transit traffic through the Austrian Alps is of major concern in government policy. Pollutant burdens resulting from such traffic are discussed widely in Austrian politics and have already led to measures to restrict traffic on transit routes. In the course of an environmental assessment study, comprehensive measurements were performed.

Updated urban emission inventory with a high resolution in time and space for the city of Graz.

Emission inventories are a tool to monitor the development of the emission situation in urban areas. Therefore, periodic updates of the emission inventory are required. An update of an emission inventory is always combined with new or improved emission factors and models.