Numerical methods

The EST deploys a variety of numerical methods to complement experimental considerations and for process design purposes.

For the analysis and simulation of thermodynamic, fluid-mechanical, chemical and power plant processes as well as the visualization and planning of facilities and their control following software is being utilized:

EBSILON® Professional, PPSD

  • Stationary simulation of thermal power plants
  • Plant planning and design
  • Optimization of process parameters
  • Integration of Retrofit-concepts
  • Integration of CCS and CCU measures


  • Dynamic simulation of power plants, thermal process plants and process steam systems
  • Optimization of controller parameters and load gradients
  • Failure Investigation
  • Complete visualization of power plant control
  • Evaluation of Retrofit-concepts
  • Coal power plants (conventional and oxyfuel), combined cycle power plants, CSP systems, waste incineration


  • Process considerations on the basis of mass and energy balances for chemical processes
  • Broad chemical database for a detailed depiction of chemical processes
  • Partial load behavior
  • Process optimization


  • Combustion chamber simulations
  • Flow calculations
  • Estimation of concentrations of main gas species (O2, CO2, CO, CH2) and harmful gases (SO2, H2S, COS, HCl etc.)
  • Temperature distribution
  • Formation of corrosive atmospheres through reactions with sulfur and chlorine containing compounds of coal
  • Multi-phase flows with Euler-Euler and Euler-Lagrange (with PSD)
  • Reactive gas-solid flows
  • In-house extension ESTOS for coal burn-up

In-House DEM-Code ''DEMEST''

  • Euler-Lagrange / DEM (4 way coupling)
  • Mono- and polydisperse particles
  • Parallelization of calculations possible
  • Fine fluid girds in combination with multi-grid method for fluid phase calculations
  • Mean-particle grid for particle phase calculations
  • Particle search grid (advanced algorithms for impact detection)
  • Tools and software environment (C++, MPI und Matlab)