Dr. Sven Eckert

Head Magneto­hydro­dynamics
Phone: +49 351 260 2132

Magnetohydrodynamics - research projects

Foto: Scheme and computed magnetic eigenfield of the Riga dynamo ©Copyright: Dr. Frank Stefani

The Riga Dynamo Experiment

Magnetic fields of planets, stars, and galaxies are produced by self-excitation in moving electrically conducting fluids. In 1999, the underlying hydromagnetic dynamo effect was experimentally evidenced at the Riga dynamo facility. With numerical simulations, the development of measurement techniques, and extensive data analyses our department has contributed significantly to the success of this unique experiment.
Foto: Lithium liquid metal electrode ©Copyright: ©Steffen Landgraf, Michael Nimtz

Energy Storage and Energy Con­version with Liquid Metals

Liquid metals offer a range of benefits when used for energy storage and energy con­version: cost-effective production, high cycle numbers and high scalability
Foto: LIMMCAST-plant ©Copyright: Dr. Klaus Timmel

Continuous Casting Liquid Metal Model

The LIMMCAST facility is used to investigate the process of continuous casting of metals and to improve it by applying properly designed electromagnetic fields.
Foto: Magneto-hydrodynamics: Steel Casting Using Magnetic Fields (Picture: AIFilm) ©Copyright: AI Films

Measurement techniques for liquid metals

The knowledge of velocity structures or of the gas distribution in liquid metals is of great interest in laboratory experiments as well as in industrial applications. The opaqueness of those fluids prevents the use of well established optical methods. Additionally, the corrosiveness and the high temperatures are challenges for measurement techniques.
Foto: X Ray Setup ©Copyright: Dr. Natalia Shevchenko

X-ray visualisation of solidification and two-phase phenomena

X-ray absorption contrast techniques are an important diagnostic tool to investigate solidification processes or liquid metal two-phase flows in metallic alloys. X-ray visualisation enables a general, intuitive understanding of flow phenomena or pattern formation in opaque liquid metals.
Foto: Crystal growth - Model experiment ©Copyright: Dr. Josef Pal

Crystal growth melt flow control using magnetic fields

The physical modeling of crystal growth processes provides a tangible insight into key process flows. The numerical simulation of heat and mass transfer has great potential for optimizing the basic processes involved, especially the control of the flow by means of magnetic fields. By combining both approaches one may add up advantages and eliminate shortcomings.
Foto: Tayler instability ©Copyright: Dr. Norbert Weber

The Tayler Instability

The Tayler instability limits the up-scalability of liquid metal batteries and plays a major role in astrophysics.
Foto: Magnetfelder im Kosmos ©Copyright: Sander Münster

Magnetorotational instability (PROMISE Experiment)

Cosmic magnetic fields play a surprisingly active role in cosmic structure formation by fostering outward angular momentum transport and inward mass accretion onto central objects, like protostars or black holes, by means of the magnetorotational instability (MRI). At the PROMISE experiment, two special ­versions of MRI, the helical MRI and the azimuthal MRI are investigated.
Foto: Bubble in the fields ©Copyright: Dr. Tom Weier


Magnetic control of mass transfer and convection in electrochemical processes
Foto: Liquid metal multiphase flows ©Copyright: Dr. Sven Eckert

Liquid metal multiphase flows

Liquid metal two-phase flows are of particular importance for many processes in metallurgy and metal casting. For example, the secondary-metallurgical treatment of liquid steel relies on the injection of purge gas for improving the steel cleanliness. Objectives are the enhancement of mixing and homogenization and the se­paration of inclusions by flotation.
Foto: Magneto-hydrodynamics: Steel Casting Using Magnetic Fields (Picture: AIFilm) ©Copyright: AI Films

Young Investigators Group on Measurement Techniques for Liquid Metal Flows


further research topics