Contact

Dr. Dirk Lucas
Head Computational Fluid Dynamics
d.lucasAthzdr.de
Phone: +49 351 260 - 2047
Fax: +49 351 260 - 12047

Computational Fluid Dynamics

The activities of the CFD department focus on:

  • The CFD-model development and validation for multiphase flows
    • for medium and large scale industrial applications
    • basing on the multi-fluid approach.
  • Dedicated experiments as well as DNS / LES aiming on the development and validations of closure models.

Keywords

AIAD, air conditioning, baseline models, boiling, breakup, bubble-induced turbulence, chemical reaction, coalescence, condensation, conference, critical heat flux, density driven flows, evaporation, experiments, flashing, flotation, flows in fuel elements, fuel element storage pools, GENTOP, iClass, iMUSIG, liquid metal bubbly flows, manifolds, OpenFOAM, phase transfer, poly-disperse bubbly flows, rotational flows, short course, three phase flows, transport of isolation materials, vertical pipe flows, wall boiling

Research

Foto: cfd - motivation ©Copyright: Dr. Dirk Lucas

Motivation and Strategy

The qualification of multiphase CFD-models in frame of the multi-fluid approach requires some consolidation. For the extension of the applicability new concepts are established.
More
Foto: Baseline-Modell für polydisperse Blasenströmungen - iMUSIG - refpic ©Copyright: Dr. Yixiang Liao

Baseline-Modell für polydisperse Blasenströmungen – iMUSIG

One focus of the ongoing activities is the further development of the baseline model for poly-disperse bubbly flows. The inhomogeneous MUSIG model (iMUSIG) provides a suitable modelling framework while the closure models including all ­parameters are well defined.
More
Foto: HOTLEG CFD ©Copyright: Dr. Thomas Höhne

Baseline model for se­parated flows – AIAD

Se­parated flows, i.e. flow with large gas-liquid-interfaces occur frequently in horizontal flow domains (stratification), but are also observed in other configurations as e.g. annular flow in ­vertical pipes.
More
Foto: GENTOP WALL BOILING Example ©Copyright: Dr. Thomas Höhne

GENeralized TwO-Phase flow concept – GENTOP

In many gas-liquid flows with relevance for applications different morpho­logies of the interfacial structure (disperse or segregated) occur in ­parallel and transitions between these morpho­logies have to be considered. The innovative GENTOP-concept is a good basis for the simulation of such flows.
More
Foto: OpenFoam Keyboard ©Copyright: Dr. Fabian Schlegel

Modelling of Multiphase Flows with OpenFOAM

Within this project the main developments for the numerical simulation of multiphase flows at Helmholtz-Zentrum Dresden-Rossendorf are transferred to the C++ library OpenFOAM. The complete access to the source code, in contrast to commercial CFD software, give rise to much more possibilities concerning the development of new physical models and simulation methods.
More
Foto: CFD Simulation von TOPFLOW-PTS Dampf/Wasser Experiment, Temperaturverteilung und Wasserströmungslinien ©Copyright: Pavel Apanasevich

Applications and projects

Our activities aim on the qualification of multiphase CFD-methods as a tool for the optimization of industrial ap­paratuses and processes as well for safety analyses. Some examples for applications and projects are given here.
More


Contact

Dr. Dirk Lucas
Head Computational Fluid Dynamics
d.lucasAthzdr.de
Phone: +49 351 260 - 2047
Fax: +49 351 260 - 12047