Coupler of Multi-scale and Multi-physics Applications

In the real-life systems simulations generally cover a wider range of physical phenomena. A lot of research studies have been done in the past years for multi-scale and multi-physics modeling, with a wide variety of areas in computational science, such as chemical engineering, plasma physics, material science and aerospace.

In most cases, multi-scale and multi-physics applications are developed to contain the single-scale/physics codes as modules and a coupling module which involves interactions amongst physical phenomena. Usually the coupling is specific for the individual applications.

The focus of this project is to develop more generic coupling tools which can be used for different applications. Another on-going approach is to parallelize and optimize coupled applications on homogeneous multi- and manycore HPC architectures.

The observation of the wide variety of multi-scale and multi-physics mathematical models shows that physical phenomena can occur

  • within one code using more equations, e.g. for chemical reactions in fluid flow
  • by coupling independent modules, e.g. fluid-structure interaction, or
  • by running different simulations sequentially as workflow, e.g. medical surgery.

In the present approach multi-scale simulations of aeroacoustic problems are researched. On unstructured grids the modeling of small, noise generating flow scales must be resolved. By contrast the acoustic waves with small pressure amplitudes and large wavelengths are simulated on cartesian grids. The coupling of cartesian grids with unstructured grids, as well as grids with different scales, are implemented in a common code framework.


Katharina Benkert
Höchstleistungsrechenzentrum Universität Stuttgart,
Phone: ++49-711-685-5858
Email: benkert[at]

Xin Wang
Höchstleistungsrechenzentrum Universität Stuttgart,
Phone: ++49-711-685-87233