Contact

Prof. Dr. Uwe Hampel
Head Experimental Thermal Fluid Dynamics
u.hampel@hzdr.de
Phone: +49 351 260 - 2772
Fax: 12772, 2383

Claudia Losinski
Secretary Experimental Thermal Fluid Dynamics
c.losinskiAthzdr.de
Phone: +49 351 260 - 3460
Fax: 13460, 2383

Experimental Thermal Fluid Dynamics


  • The division Experimental Thermal Fluid Dynamics conducts experimental analyses of multiphase flows.
  • The work is related to programmatic research on nuclear safety and efficient multiphase and thermal processes in the chemical and process industries.

Thermal fluid dynamic phenomena during accident scenarios in nuclear power reactor facilities


PTS Dedicated experimental analyses of fluid dynamic phenomena for typical accident scenarios, like loss-of-coolant accidents and emergency core cooling scenarios, are being conducted. Moreover we investigate fluid dynamic effects in passive emergency cooling systems. Hot pressurized experiments at typical pressure/temperature conditions in real facilities of up to 50 bar and 264°C saturation temperature are being performed in the pressure tank of the TOPFLOW facility. The experimental data is being used for model development and validation of numerical simulations tools for thermal hydraulics and reactor physics.

Efficient chemical multiphase processes


TOPFLOW Energy intensive chemical and thermal processes can be made more efficient by means of process intensification. This requires a multiscale process understanding as well as development and application of modern numerical simulation tools and measurement techniques. The research comprises in-detail analyses of multiphase flow, heat and mass transfer as well as reaction processes and their interplay in multiphase reactors and separation units, the development of new process controls, unconventional process devices and structured reactor components and eventually the study of complicate chemical reactions with modern in-situ measurement techniques for improved simulation of industrially relevant processes. Extended diagnostics regarding process efficiency and safety is being made for new advantageous but often hazardous process windows.

Experiments on fundamental phenomena in two-phase flows


TOPFLOW The development of models and the validation of computational fluid dynamics codes for multiphase flows require reliable and high-resolution experimental data. Experimental studies of two-phase flow at industrially relevant conditions are being conducted at the TOPFLOW thermal hydraulic test facility. An essential focus is the application of special measurement techniques for in-detail flow analyses.

Development of multiphase flow measurement techniques


TOPFLOW Experiments in multiphase flows require dedicated measurement techniques, which are often not commercially available. We have a long tradition in the development of special multiphase flow sensor and imaging techniques for in-detail flow analyses, with a focus on measurement with high resolution in space and time. Recently pioneered imaging techniques are the wire-mesh sensor, X-ray and gamma ray tomography as well as fast local probes for phase fraction, temperatures and velocities, which withstand aggressive process environments and high pressures and temperatures. Some of the techniques could be developed until marketability.

Industrial flow measurement and imaging


TOPFLOW Together with different partners from industry and research we conduct experimental studies on flow phenomena in plant components and fluid dynamic machinery. Examples are tomographic flow studies on pumps, armatures, chemical reactors, water treatment units or hydraulic couplings.



Contact

Prof. Dr. Uwe Hampel
Head Experimental Thermal Fluid Dynamics
u.hampel@hzdr.de
Phone: +49 351 260 - 2772
Fax: 12772, 2383

Claudia Losinski
Secretary Experimental Thermal Fluid Dynamics
c.losinskiAthzdr.de
Phone: +49 351 260 - 3460
Fax: 13460, 2383