Research areas

In the main field of research the frontiers of classical flow descriptions are investigated. High Knudsen numbers lead to a molecular, non-continuous fluid behavior. As a consequence, high Knudsen numbers deny the description of a flow by a continuous approach and additional statistical models have to be defined. In this case a quasi-continuous transport model for dispersed systems based on transport equations for statistical moments is used.mehr...

Plasma is the most abundant state of matter in the universe, it consist of ionized atoms or molecules and free electrons. Compared to ordinary matter it has some special properties, among other there exist long-ranging attraction and repulsion of charges through electrostatic forces, from which a verity of other fascinating effects emerge. mehr...

The present situation of space exploration calls for missions beyond the moon and for such missions, chemical propulsion is not a viable option, except for the case of launch vehicles where high thrust is required. Functionally, the inability of chemical propulsion systems to achieve higher exhaust velocities is due to limitation in the maximum tolerable temperature in the combustion chamber and to avoid excessive heat transfer to the walls.mehr...

Thanks to numerous technical studies the physical law of periodic flow in-stability in fluid flows with high Reynolds numbers is well-known. The laminar character (stream lines positioned in laminar layers) is destroyed by perturbations, which diffuse from the wall through the complete flow domain. The change from a steady laminar stream to an unsteady turbulent flow is defined as transient.mehr...

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