NIC Excellence Project April 2022

The John von Neumann Institute for Computing (NIC) Peer Review Board regularly awards the title "NIC Excellence Project" to outstanding simulation projects. At its April meeting, the board decided to honour Prof. Jörg Schumacher (TU Ilmenau) for his project “Mesoscale convection: Numerical analysis of compressibility”.

Turbulent convection flows in nature typically span a wide range of lengths and times, ranging from thousands of kilometres to centimetres and from days to seconds. In the intermediate mesoscale range, turbulent convection is often organized in nearly regular flow patterns that we observe, for example, as cloud streets in the atmosphere or as a honeycomb network of granules on the surface of the Sun. Of the several reasons for this order on the mesoscale, one specific aspect – the effect of compressibility – will be investigated in more detail in this project by means of direct numerical simulations. In compressible flows, the density of the fluid varies and gives rise to additional instabilities as well as new structures such as density jumps. Their influence on mesoscale patterns and heat transport will be clarified in the project. For more details, see NIC webpage (in German).

Contact: Dr. Alexander Trautmann,

from JSC News No. 289, 4 July 2022

Last Modified: 08.07.2022