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Find out about the latest applications running on the GCS supercomputers. For projects from specific research fields, please chose from the list in the left column.

Fully-Resolved, Finite-Size Particles in Statistically Stationary, Homogeneous Turbulence

Fully-Resolved, Finite-Size Particles in Statistically Stationary, Homogeneous Turbulence

o Turbulent flow seeded with solid particles is encountered in a number of natural and man-made systems. Many physical effects occurring when the fluid and the solid phase interact strongly so far have obstinately resisted analytical and experimental approaches – sometimes with far reaching consequences in various practical applications. Using SuperMUC, researchers simulated with unprecedented detail the turbulent flow in an unbounded domain in the presence of suspended, heavy, solid particles in order to understand and describe the dynamics of such particulate flow systems with sufficient accuracy.

Principal Investigator: Markus Uhlmann, Karlsruhe Institute of Technology (Germany)
HPC Platform: SuperMUC of LRZ - Date published: February 2016
More: Fully-Resolved, Finite-Size Particles in Statistically Stationary, Homogeneous Turbulence …

High-Resolution Numerical Analysis of Turbulent Flow in Straight Ducts with Rectangular Cross-Section

High-Resolution Numerical Analysis of Turbulent Flow in Straight Ducts with Rectangular Cross-Section

Researchers investigated the mechanism of secondary flow formation in open duct flow where rigid/rigid and mixed (rigid/free-surface) corners exist. Employing direct numerical simulations (DNS) on HLRS high performance computing system Hornet, the scientists aimed at generating high-fidelity data in closed and open duct flows by means of pseudo-spectral DNS and at analysing the flow fields with particular emphasis on the dynamics of coherent structures.

Principal Investigator: Markus Uhlmann, Karlsruhe Institute of Technology (Germany)
HPC Platform: Hornet of HLRS - Date published: February 2016
More: High-Resolution Numerical Analysis of Turbulent Flow in Straight Ducts with Rectangular Cross-Section …

Full Scale Modelling of the Proton Driven Plasma Wakefield Accelerator

Full Scale Modelling of the Proton Driven Plasma Wakefield Accelerator

Leveraging the petascale computing power of SuperMUC, an international team of researchers performed 3D simulations of scenarios relevant to The Proton Driven Plasma Wakefield Acceleration Experiment framed by AWAKE, an accelerator R&D project based at CERN. Their numerical findings provide a set of conditions for which the long proton bunches could propagate stably over arbitrarily long distances, and explore possible experimental configurations that could be relevant to investigate astrophysical scenarios in the lab.

Principal Investigator: Jorge Vieira, Instituto Superior Técnico, Lisboa (Portugal)
HPC Platform: SuperMUC of LRZ - Date published: February 2016
More: Full Scale Modelling of the Proton Driven Plasma Wakefield Accelerator …

Kinetic Turbulence in the Solar Wind - Turbulent Cascade and Wave-Particle Interaction

Kinetic Turbulence in the Solar Wind - Turbulent Cascade and Wave-Particle Interaction

An international research collaboration led by the University of Würzburg delved into the subjects of turbulence and particle acceleration in the solar wind by performing highly complex numerical simulations leveraging the particle-in-cell (PiC) approach, a technique used to solve a certain class of partial differential equations thus capable of studying these phenomena. In order to model the complex system of different waves, particles and electromagnetic fields self-consistently, the use of massive computing power such as provided by high performance computing system SuperMUC is inevitable.
  
Principal Investigator: Felix Spanier, Institut für Theoretische Physik und Astrophysik, Universität Würzburg (Germany)
HPC Platform: SuperMUC of LRZ - Date published: February 2016
More: Kinetic Turbulence in the Solar Wind - Turbulent Cascade and Wave-Particle Interaction …

Exploring the Quark Mass Plane with Open Boundaries

Exploring the Quark Mass Plane with Open Boundaries

An international team of researchers leveraged the computing power of supercomputer JUQUEEN in the context of a very large international effort in Lattice quantum chromodynamics (QCD). The project addressed important aspects of hadron physics for the very first time respectively with unprecedented accuracy, which would not have been possible without superior high performance computing (HPC) power.

Principal Investigator: Andreas Schäfer, Institut für Theoretische Physik, Universität Regensburg (Germany)
HPC Platform: JUQUEEN of JSC - Date published: January 2016
More: Exploring the Quark Mass Plane with Open Boundaries …

Electron-Injection Techniques in Plasma-Wakefield Accelerators for Driving Free-Electron Lasers

Electron-Injection Techniques in Plasma-Wakefield Accelerators for Driving Free-Electron Lasers

Researchers from the Deutsches Elektronen-Synchrotron Hamburg (Germany) study and design electron-injection techniques in plasma-wakefield accelerators for the production of high-quality beams suitable for application as free-electron lasers. Since the physics involved in the process cannot be treated analytically in most of the cases of interest, particle-in-cell simulations are required which allow to calculate the response of the plasma electrons to the passage of charged beams and/or high-intensity lasers.

Principal Investigators: Jens Osterhoff and Alberto Martinez de la Ossa, Deutsches Elektronen-Synchrotron - DESY, Hamburg (Germany)
HPC Platform: JUQUEEN of JSC - Date published: January 2016
More: Electron-Injection Techniques in Plasma-Wakefield Accelerators for Driving Free-Electron Lasers …

Quantum Monte-Carlo and Exact Diagonalization Studies of Correlated Electron Systems

Quantum Monte-Carlo and Exact Diagonalization Studies of Correlated Electron Systems

Scientists of the Department of Theoretical Physics and Astrophysics of the Universität Würzburg are leveraging the computing power of high performance computing system SuperMUC of the LRZ to perform model calculations which are particularly relevant for our understanding of low energy phenomena. These model calculations are essential for computing critical phenomena and associated critical exponents which define universality classes.

Principal Investigators: Prof. Dr. F. F. Assaad and Prof. Dr. W. Hanke, Institut für Theoretische Physik und Astrophysik, Universität Würzburg (Germany)
HPC Platform: SuperMUC of LRZ - Date published: January 2016
More: Quantum Monte-Carlo and Exact Diagonalization Studies of Correlated Electron Systems …

DNS of Cloud Cavitation Collapse

Direct Numerical Simulations of Cloud Cavitation Collapse

Leveraging the petascale computing power of HPC system JUQUEEN of the Jülich Supercomputing Centre, researchers at the Chair of Computational Science at ETH Zurich performed unprecedented large-scale simulations of cloud cavitation collapse with up to 75’000 vapor cavities on resolutions of up to 0.5 trillion mesh cells and 25’000 time steps.

Principal Investigator: Petros Koumoutsakos, Computational Science & Engineering Laboratory, ETH Zurich (Switzerland)
HPC Platform: JUQUEEN of JSC - Date published: January 2016
More: Direct Numerical Simulations of Cloud Cavitation Collapse …

DNS and LES of Wall-Bounded Flows for Aeroacoustic Source Term Identification

Direct Numerical and Large Eddy Simulation of Wall-Bounded Flows for Aeroacoustic Source Term Identification

In order to gain a deeper understanding of the aerodynamic noise generation mechanisms and transmission for automotive applications, researchers from the Universität Erlangen leveraged HPC system SuperMUC of LRZ to develop a hybrid aeroacoustic method. The turbulent flow over a forward-facing step served as a test case for the final validation of a hybrid scheme for the computation of broadband noise, as caused typically by turbulent flows.

Principal Investigator: Christoph Scheit, Lehrstuhl für Prozessmaschinen und Anlagentechnik, Friedrich-Alexander Universität Erlangen-Nürnberg (Germany)
HPC Platform: SuperMUC of LRZ - Date published: January 2016
More: Direct Numerical and Large Eddy Simulation of Wall-Bounded Flows for Aeroacoustic Source Term Identification …

Large Eddy Simulation of a Pseudo-Shock System Within a Laval Nozzle

Large Eddy Simulation of a Pseudo-Shock System Within a Laval Nozzle

Researchers of the Technische Universität München conducted large-eddy simulations (LES) on HPC system SuperMUC of LRZ for numerical investigations of a pseudo-hock system. These pseudo-shock systems influence the reliability and performance of a wide range of flow devices, such as ducts and pipelines in the field of process engineering and supersonic aircraft inlets. Thus, the optimization of pseudo-shock systems is of great academic and commercial interest.

Principal Investigator: Stefan Hickel, Technische Universität München (Germany)
HPC Platform: SuperMUC of LRZ - Date published: December 2015

More: Large Eddy Simulation of a Pseudo-Shock System Within a Laval Nozzle …

Gluonic scale setting with √t0 and w0

Gluonic Scale Setting With √t0 and w0

Physicists at the University of Wuppertal harness the supercomputer power of the JSC HPC system JUQUEEN to carry out a computation of the gluonic scales √t0 and w0 in QCD with 2+1+1 dynamical quarks where each of them is taken at its respective physical mass.

Principal Investigator: Stephan Dürr, Institut für Theoretische Physik, FB-C, Universität Wuppertal (Germany)
HPC Platform: JUQUEEN of JSC - Date published: December 2015

More: Gluonic Scale Setting With √t0 and w0 …

Large-Scale Phase-Field Simulations of Ternary Eutectic Directional Solidification

Large-Scale Phase-Field Simulations of Ternary Eutectic Directional Solidification

Ternary super-alloys with defined properties for high-performance materials are of growing importance in many industries. Using the phase-field method and exploiting the computing power of GCS HPC systems, scientists simulated the ternary eutectic directional solidification of Al-Ag-Cu (Aluminum – Silver – Copper) to study the resulting patterns and the 3D-development of the micro structure with the aim to gain a better understanding of material- and process parameters of the highly complex solidifying process.

Principal Investigator: Britta Nestler, Institute of Applied Materials-Computational Materials Science, Karlsruhe Institute of Technology
HPC Platform: Hornet and Hazel Hen of HLRS - Date published: Nov. 2015
More: Large-Scale Phase-Field Simulations of Ternary Eutectic Directional Solidification …

Embedding Approach to Hot Adatom Motion

Embedding Approach to Hot Adatom Motion

Exothermic surface chemical reactions may easily release several electron volts of energy. Fundamental questions regarding the conversion and dissipation of this microscopically sizable amount of energy are critical in e.g. present day energy production and pollution mitigation, and yet in many cases remain unanswered. Scientists of the Technische Universität München promote microscopic understanding through a novel multi-scale approach which, for the first time, allows to model energy dissipation into substrate phonons from first-principles.

Principal Investigator: Karsten Reuter, Lehrstuhl für Theoretische Chemie, Technische Universität München
HPC Platform: SuperMUC of LRZ - Date published: November 2015
More: Embedding Approach to Hot Adatom Motion …

EXtreme PREcipitation and Hydrological Climate Scenario Simulations (EXPRESS-Hydro)High Resolution Gravity Field Modelling

High Resolution Gravity Field Modelling

Exploiting the computing power and memory capacities of HPC system SuperMUC, scientists of the Technische Universität München aimed at providing a global high resolution gravity field model with hitherto unprecedented accuracy and resolution. The model can be now be used by the scientific community as a surface reference for climate studies and it serves e.g. as main input for geophysical analyses and for the determination of the ocean circulation patterns.

Principal Investigator: Thomas Gruber, Institute of Astronomical and Physical Geodesy, Technische Universität München (Germany)
HPC Platform: SuperMUC of LRZ - Date published: November 2015
More: High Resolution Gravity Field Modelling …

Simulation of Shock-Wave/Boundary-Layer Interaction Using Conservative Finite-Differences

Simulation of Shock-Wave/Boundary-Layer Interaction Using Conservative Finite-Differences

Shock-wave/boundary-layer interactions (SBLIs) play an important part in many engineering applications. They are common in internal and external aerodynamic flows. However, numerical treatment of such SBLIs is difficult as the important flow features place competing demands on the applied numerical algorithms. Using the HPC infrastructure provided by the HLRS, scientists of the Technische Universität Berlin performed a detailed direct numerical simulation of a transonic SBLI creating a detailed numerical database this way which is now available for further detailed studies.

Principal Investigator: Jörn Sesterhenn, CFD - Technische Universität Berlin, (Germany)
HPC Platform: Hermit of HLRS - Date published: November 2015
More: Simulation of Shock-Wave/Boundary-Layer Interaction Using Conservative Finite-Differences …

Simulation of Fluid-Particle Interaction in Turbulent Flows

Simulation of Fluid-Particle Interaction in Turbulent Flows

Within the framework of a research project which aims at reducing the emission of CO2 by conventional coal-fired power plants through oxy-fuel combustion, scientists of the RWTH Aachen University simulated the heating processes of coal dust in order to gain a better understanding about the conditions causing carbon dust to ignite in an oxygen-carbon dioxide atmosphere. Since carbon particles are of irregular, non-spherical shape their motion is difficult to predict, thus simulations of large quantities of fully dissolved carbon particles moving freely in a turbulent flow require the availability of petascale HPC systems like Hazel Hen.

Principal Investigator: Wolfgang Schröder, Institute of Aerodynamics, RWTH Aachen University (Germany)
HPC Platform: Hazel Hen of HLRS - Date published: November 2015
More: Simulation of Fluid-Particle Interaction in Turbulent Flows …

Fluid-Structure Interaction of Thin Structures in Turbulent Flows

Fluid-Structure Interaction of Thin Structures in Turbulent Flows

Fluid-Structure Interaction is a topic of major interest in many engineering fields. The significant growth of the computational capabilities allows solving more complex coupled problems, whereby the physical models get closer to reality. In order to do simulate practically relevant light-weight structural systems in turbulent flows, scientists of the Helmut-Schmidt-University in Hamburg developed and implemented an original computational methodology especially for thin flexible structures in turbulent flows.

Principal Investigator: Michael Breuer, Department of Fluid Mechanics, Helmut-Schmidt-University, Hamburg (Germany)
HPC Platform: SuperMUC of LRZ - Date published: November 2015
More: Fluid-Structure Interaction of Thin Structures in Turbulent Flows …

Large-Scale Simulations and Modeling of Pollutant Emissions in Turbulent Premixed Flames

Large-Scale Simulations and Modeling of Pollutant Emissions in Turbulent Premixed Flames

Scientists of the RWTH Aachen University have carried out a peta-scale direct numerical simulation (DNS) of a temporally evolving lean premixed methane/air jet flame. The DNS is intented to closely mimic gas turbine combustion and can be regarded as an idealized representation of a premixed flame element inside a jet burner. To realize high resolution of flame and turbulence and to obtain converged statistics, the simulation domain was discretized with almost three billion grid points which together with the chemistry model resulted in nearly 100 billion degrees of freedom.

Principal Investigator: Heinz Pitsch, Institute for Combustion Technology, RWTH Aachen University (Germany)
HPC Platform: SuperMUC of LRZ - Date published: October 2015
More: Large-Scale Simulations and Modeling of Pollutant Emissions in Turbulent Premixed Flames …

Simulating Transitional Hemodynamics in Intracarnial Aneurysms at Extreme Scale

Simulating Transitional Hemodynamics in Intracarnial Aneurysms at Extreme Scale

Scientists leverage high performance computing technologies to identify the morphological characteristics of intracranial aneurysms that result in high frequency fluctuations, and assess the role of these fluctuations in aneurysmal wall degradation and consequently aneurysm rupture. Using SuperMUC they performed simulations with up to one billion elements, which allowed the simulation of flow at spatial and temporal resolutions of 8µm and 1µs, while resolving the smallest structures that can develop in a turbulent flow.

Principal Investigator: Sabine Roller, Simulation Techniques and Scientific Computing, University of Siegen (Germany)
HPC Platform: SuperMUC of LRZ - Date published: October 2015
More: Simulating Transitional Hemodynamics in Intracarnial Aneurysms at Extreme Scale …

EXtreme PREcipitation and Hydrological Climate Scenario Simulations (EXPRESS-Hydro)

EXtreme PREcipitation and Hydrological Climate Scenario Simulations (EXPRESS-Hydro)

Predicting weather and climate and its impacts on the environment, including hazards such as floods, droughts and landslides, continues to be one of the main challenges of the 21st century – in particular for the European region as it is exposed to intense Atlantic synoptic perturbations. Scientists performed for the first time long climate simulations over the European domain at a very fine cloud-permitting resolution of about 4 km with explicitly resolved convection and a sharp representation of orography, thanks to the possibility of running very computationally and data storage demanding simulations on SuperMUC.

Principal Investigator: Dieter Kranzlmüller, Ludwig-Maximilians-Universität München (Germany)
HPC Platform: SuperMUC of LRZ - Date published: October 2015
More: EXtreme PREcipitation and Hydrological Climate Scenario Simulations (EXPRESS-Hydro) …

NURESAFE – Nuclear Reactor Safety Simulation Platform

NURESAFE – Nuclear Reactor Safety Simulation Platform

This project, for which HPC system Hermit of the High Performance Computing Center Stuttgart served as computing platform, is part of the NURESAFE initiative for nuclear safety. The objective was to develop a global modelling framework for multi-scale core thermal-hydraulics in Pressurized Water Reactors (PWR) as understanding heat transfer phenomena in turbulent bubbly flows is of great interest for the scientist community and for the industry.

Principal Investigator: Dr. Sylvain Reboux, ASCOMP AG, Zurich/Switzerland
HPC Platform: Hermit of HLRS - Date published: October 2015
More: NURESAFE – Nuclear Reactor Safety Simulation Platform …

Collisionless Shock Formation and Ion Acceleration in Astrophysics and in the Laboratory

Collisionless Shock Formation and Ion Acceleration in Astrophysics and in the Laboratory

The acceleration of charged particles is still one of the most important problems in astrophysics. Cosmic rays, which mainly consist of protons, show a broad spectrum with energies up to 1021 eV, which can be produced in collisionless shocks. However, many questions are still open regarding the acceleration process and the process of shock formation. To study this complex process with non-linear methods, researchers used JUQUEEN to investigate different aspects of the shock formation process and further applications.

Principal Investigator: Anne Stockem Novo, Ruhr-University Bochum (Germany)
HPC Platform: JUQUEEN of JSC - Date published: October 2015
More: Collisionless Shock Formation and Ion Acceleration in Astrophysics and in the Laboratory …

Large Eddy Simulation of Large-Scale Coal and Biomass Combustion

Large Eddy Simulation of Large-Scale Coal and Biomass Combustion

Scientists of the University of Duisburg-Essen pushed further the state of the art by simulating large-scale coal and biomass flames in furnaces that have been studied in detail experimentally – the Instituto Superior Técnico and the Brigham Young University furnace. Within this project, the largest large eddy simulation (LES) of coal combustion ever to be computed provided high-resolution scalar profiles within the furnace, which allowed investigating the conditions that coal particles are subjected to in these applications and to compute particle combustion histories. LES is able to provide insights to the phenomena occurring in this type of application that are currently not available through experimental means.

Principal Investigator: Andreas Kempf, Institut für Verbrennung und Gasdynamik, Lehrstuhl Fluiddynamik, Universität Duisburg-Essen (Germany)
HPC Platform: SuperMUC of LRZ - Date published: October 2015
More: Large Eddy Simulation of Large-Scale Coal and Biomass Combustion …

Simulation of magnetic fingerprints of interface defects in silicon solar cells

Simulation of Magnetic Fingerprints of Interface Defects in Silicon Solar Cells

Leveraging the high-performance computing capabilities of the HLRS supercomputing infrastructure, scientists of the Theoretical Materials Physics Group of the Paderborn University managed to trace interface defects in amorphous/crystalline silicon heterojunction solar cells. Visualizing the processes with atomic resolution they were able to characterize the processes that compromise the solar cells' efficiency. The findings will help to optimize the solar cells further and to decrease production costs.

Principal Investigator: Prof. Dr. Wolf Gero Schmidt, Theoretical Materials Physics Group, Paderborn University (Germany)
HPC Platform: Hermit and Hornet of HLRS - Date published: Oct. 2015

More: Simulation of Magnetic Fingerprints of Interface Defects in Silicon Solar Cells …

Simulation of Aeroacoustic Feedback Phenomena on a Side-View Mirror

Simulation of Aeroacoustic Feedback Phenomena on a Side-View Mirror

In order to analyse aeroacoustic noise generation processes, researchers from the Institute for Aerodynamics and Gas Dynamics performed high fidelity, large-scale flow and acoustic computations using the discontinuous Galerkin spectral element method on the HPC system Hornet at the High Performance Computing Center Stuttgart (HLRS). The aim of this investigation is to gain insight into the tonal noise generation process of a side-view mirror.

Principal Investigator: Claus-Dieter Munz, Institut für Aerodynamik und Gasdynamik, Universität Stuttgart (Germany)
HPC Platform: Hornet of HLRS - Date published: October 2015
More: Simulation of Aeroacoustic Feedback Phenomena on a Side-View Mirror …

Gravoturbulent Planetesimal Formation

Gravoturbulent Planetesimal Formation

Scientists of the Max Planck Institute for Astronomy in Heidelberg are using the HPC infrastructure of the Jülich Supercomputing Centre for extensive magneto-hydro-dynamical and million particle simulations of protoplanetary disks to study their evolution and properties. Findings are helping the researchers to understand the processes leading to the formation of planets, moons and asteroids. Their investigations will help to explain the observed diversity in planetary systems and in our own solar system.
  
Principal Investigator: Hubertus Klahr, Max-Planck-Institut für Astronomie, Heidelberg (Germany)
HPC Platform: JUQUEEN of JSC - Date published: September 2015

More: Gravoturbulent Planetesimal Formation …

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