DNS of turbulent flow and heat transfer in a channel with surface mounted cubes

The turbulent flow and heat transfer in a channel with surface mounted cubical obstacles forms a generic example of a problem that occurs in many engineering applications, for instance in the design of cooling devices. We have performed a numerical simulation of it without using any turbulence models. This approach is the most accurate - but...

Improvement of underrun protection of trucks

Truck accidents represent a significant factor in the overall road accident scene, namely 25 to 30% of the fatal accidents in the EU. Collision partners of trucks are mainly passenger cars in car-to-truck frontal collisions. The severity of this kind of accidents is due to the incompatibility of both vehicles. Today's passenger cars are built in...

Comparison of displacement and mixing diffusers

In order to compare the performance of different supply diffusers of ventilation air, the airflow pattern, temperature stratification and contaminant dispersion in a furnitured office ventilated by three kinds of air diffuser were numerically investigated. The air diffusers studied in this paper are a quarter-cylinder displacement diffuser on...