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Welcome to the home page of Bernhard Peters' research team!
The research team of
Bernhard Peters
develops advanced simulation techniques for multi-physics engineering applications derived from
the concept of the recently evolved Extended Discrete Element Method (XDEM) developed by B. Peters. The
Extended Discrete Element Method (XDEM) extends the dynamics of granular material or particles as described
through the classical Discrete Element Method (DEM) by additional properties such as the thermodynamic state,
stress/strain or electro-magnetic field for each particle. While the Discrete Element Method predicts
position and orientation in space and time for each particle, the Extended Discrete Element Method
additionally estimates properties such as internal temperature and/or species distribution of particles
taking into account heat/mass transfer to a liquid/gas phase or mechanical impact with structures.
Therefore, the concept combines numerical approaches of continuum- and discrete mechanics including the
following numerical disciplines:
- Discrete Particle Method (DPM)
- Computational Fluid Dynamics (CFD)
- Finite Element Method (FEM)
The Discrete Particle Method (DPM) itself is an advanced numerical simulation tool which deals with both
motion and chemical conversion of particulate material such as coal or biomass in furnaces. However,
predictions of solely motion or conversion in a de-coupled mode are also applicable. The Discrete Particle
Method uses object oriented techniques that support objects representing three-dimensional particles of
various shapes such as cylinders, discs or tetrahedrons for example, size and material properties. This
makes it a highly versatile tool dealing with a large variety of different industrial applications of
granular matter. A user interface allows easily extending the software further by adding user-defined models
or material properties to an already available selection of materials, properties and reaction systems
describing conversion. Thus, the user is relieved of underlying mathematics or software design, and
therefore, is able to direct his focus entirely on the application. The Discrete Particle Method is
organised in a hierarchical structure of C++ classes and works both in Linux and XP environments also on
multi-processor machines.
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