The Fifth Door

  Candle-lighted Christmas tree Candle-lighted Christmas tree, Merle Lintermann, 2 1/2 years  

Studying Breathing Interruptions with Supercomputers and Preparing for Christmas with Family

Day-to-Day Life of a JARA-HPC Researcher

Within the Simulation Laboratory Highly Scalable Fluids & Solids Engineering of JARA-HPC (or as we simply call it: "SimLab FSE“) we are dealing with exciting questions in the field of engineering and high-performance computing. When I became head of the SimLab two years ago, I basically jumped onto a moving train and was given the opportunity to familiarize myself with new topics.

  Dr. Andreas Lintermann private

From aeroacoustics of aircraft engines and their optimization through simulations in the chemical industry and the production of extremely resilient fibers made out of nanotubes – the field of application is broad and offers a lot of possibilities for new ideas. Each of our doctoral candidates works on one of these topics.

Following up my doctoral thesis about human nasal respiration, my own research focus now lies on the analysis of respiration in the whole respiratory tract. Within this context, I am especially interested in the deposition behavior of fine dust particles in the nose and lung and how breathing interruptions occur during sleep.

What all of us have in common is that those biomedical and engineering problems can only be solved with the help of high-performance computers. That's why an understanding of parallel algorithms and programming concepts is essential in order to write simulation software that is able to efficiently find solutions by using hundreds of thousands of processes.


Especially the close connection to the Jülich Supercomputing Centre, its access to new hardware, and the direct interaction with computer scientists enables us to spot new trends in the field of supercomputing, to make appropriate software adjustments, and to establish contacts between the institutes at RWTH and Forschungszentrum Jülich. It is the variety and the wide range of applications which makes our work so exciting and motivates us to develop new future-oriented concepts.

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Iso-surfaces of the Y-speed component of the Christmas sled

In my private life there also have been a number of challenges within the last few years, such as the birth of my daughter Merle shortly before I took the new job, followed by the birth of our son Justus in August this year. The children make my wife and me very happy, but they are also very demanding.

By now, we have gotten used to a thoroughly organized daily routine, which typically ends by listening to some music, doing puzzles or reading children’s books and thus easing the day’s tension. Since family life is very important to us, we decided – after our studies and doctorates in Aachen – to return to our roots near Cologne in order to be closer to our parents, siblings, and grand-parents who support us a lot. Thus we celebrate Christmas with the whole family – either at our place or at my sister Tanja’s. We decorate the tree together with the kids, and on Christmas Eve we eat together, listen to music, and dance.

We are looking forward to a merry Christmas and wish all of you some happy days amidst your loved ones in order to start the new year full of energy.

Dr.-Ing. Andreas Lintermann

Chair of Fluid Mechanics and Institute of Aerodynamics