# Projects

Find out about the latest applications running on the GCS supercomputers.

## Excited State Artefacts in Calculations of Hadron 3-Point Functions

Lattice QCD (Quantum Chromodynamics) allows to calculate properties of states which are composed of quarks and gluons, called hadrons. The most important hadrons are proton and neutron, i.e. the nucleons. To obtain this information from Lattice QCD one has to calculate what is called “3-point- functions”. With large computer resources provided such as by SuperMUC scientists were able to do this much more precisely. Furthermore, physical quark masses could be simulated rather than scientists having to rely on extrapolations from simulations with larger than physical quark masses.
**More: Excited State Artefacts in Calculations of Hadron 3-Point Functions …**

## Kaon Semi-Leptonic Form Factor

The CKM-matrix (Cabibbo-Kobayashi-Maskawa) describes the mixing between the mass eigenstates and electro-weak eigenstates of the different quark flavors in the Standard Model of Particle Physics. Scientists leverage the computing power of HPC system SuperMUC for tests of the unitarity of the CKM matrix and therefore also probe the Standard Model of Particle Physics.
**More: Kaon Semi-Leptonic Form Factor …**

## Self-Assembled Porous Media

Scientists studied the possibility of using the emulsification process of particle-stabilized emulsions to create self-assembled porous media. It was shown that this type of self-assembly can result in highly tuneable systems, which can be optimized for various purposes.
**More: Self-Assembled Porous Media …**

## Highly Resolved Simulations of Hemodynamics in Intracranial Aneurysms

A significant part of modern mortality is contributed by strokes, caused by the rupture of intracranial aneurysms. The deployment of a flow diverter stent in the parent artery of an aneurysm is a novel and minimally invasive treatment procedure. Numerical simulations of the complex dynamic flow can help to better understand important effects and to optimize the design of such stents.
**More: Highly Resolved Simulations of Hemodynamics in Intracranial Aneurysms …**

## Ab Initio Geochemistry of the Deep Earth

Researchers deploy molecular modeling approaches based on quantum mechanics to develop structure models for crystals as well as disordered materials at the conditions of the Earth's lower crust and mantle. Such ab initio simulations also provide a unique access to physical properties and thermodynamic potentials of the respective materials.
**More: Ab Initio Geochemistry of the Deep Earth …**

## Seismic Science Project SeisSol

In a collaborative effort, geophysicists, computer scientists, and experts of the Leibniz Supercomputing Centre optimized and completely parallelised the 70,000 lines of code of earthquake simulation software SeisSol. The joint effort resulted in a sustained system performance of 1.09 Petaflops for a 3+ hours simulation run using all 147,456 compute cores of HPC system SuperMUC.
**More: Seismic Science Project SeisSol …**

## Numerical Computation of Combustion Generated Noise with Direct Numerical Simulation

Scientists of a group of different institutions try to analyse in-depth the formation mechanism of noise generated from turbulent flames and to predict such noise radiations already during the development phase. HPC supercomputing resources serve as simulation platform for this project.
**More: Numerical Computation of Combustion Generated Noise with Direct Numerical Simulation …**

## The Illustris Simulation:

Revealing the Complexity of Galaxy Formation

An international team of scientists at the Heidelberg Institute for Theoretical Studies (HITS), MIT, Harvard University and the University of Cambridge has carried out the “Illustris Simulation” on the SuperMUC and CURIE supercomputers, and created the largest and most sophisticated computational model of cosmic structure formation thus far.
**More: The Illustris Simulation:
Revealing the Complexity of Galaxy Formation …**

## Molecular Dynamics Simulation of Protein-Protein Complex Formation in a Crowded Environment

A research project on HPC system SuperMUC or LRZ Garching/Munich aimed at simulating the formation of specific and non-specific protein-protein complexes and investigating the effect of additional protein molecules (crowding) on complex formation in atomic detail.
**More: Molecular Dynamics Simulation of Protein-Protein Complex Formation in a Crowded Environment …**

## TERRA-NEO: Integrated Co-Design of an Exa-Scale Earth Mantle Modeling Framework

TERRA-NEO is an ambitious project to construct a next generation mantle circulation model that allows simulation-based breakthroughs in our understanding of the solid Earth. Current and future supercomputers can deliver the exceptional computational power needed for this research field.
**More: TERRA-NEO: Integrated Co-Design of an Exa-Scale Earth Mantle Modeling Framework …**

## Nucleon and Meson Matrix Elements Close to the Physical Point

The validity of Quantum Field Theory (QFT) is proven beyond any reasonable doubt, but at the same time it is clear that the Standard Model is incomplete in many respects. Also, there are many aspects of the Standard Model, in particular of the QCD (Quantum Chromodynamics) sector, which are not yet understood. It is hoped that the combination of dedicated new experiments and Lattice QFT will allow to improve the understanding of these aspects.
**More: Nucleon and Meson Matrix Elements Close to the Physical Point …**

## Next Generation Lattice QCD Simulations of the First Two Quark Generations at the Physical Point

An international team of scientists leverages the computing power of supercomputers for a very ambitious project which is embedded in the area of elementary particle interactions and in particular the strong interaction of quarks and gluons which is described theoretically by quantum chromodynamics (QCD), a relativistic quantum field theory.
**More: Next Generation Lattice QCD Simulations of the First Two Quark Generations at the Physical Point …**

## Comparison of Navier-Stokes-Fourier Equation and Grad's Moment Equation Solutions for Turbulence

Leveraging the computing power of GCS supercomputer JUQUEEN, scientists work on taking a first significant step towards the evaluation of extended gasdynamic models, such as e.g. the Grad 13 and the regularized Grad 13 equations, for the simulation and modeling of turbulent fluid motion.
**More: Comparison of Navier-Stokes-Fourier Equation and Grad's Moment Equation Solutions for Turbulence …**

## Prediction of Stability Limits of Combustion Chambers with Large Eddy Simulation (LES)

Using the HPC capabilities of HLRS Stuttgart, scientists of the Karlsruhe Institute of Technology applied a physical model to predict the resonance characteristics of real, damped combustion systems. The model is able to describe the resonant characteristics of a single Helmholtz resonator type combustor for different operation conditions and geometries.
**More: Prediction of Stability Limits of Combustion Chambers with Large Eddy Simulation (LES) …**

## Controlled Electron-Beam Injection into Plasma Waves for Tailored Betatron-Radiation Generation

Researchers study few-femtosecond, phase-space-tailored electron bunches inside plasma wakefields. These bunches are generated by means of external injection of conventionally accelerated electron beams or by controlled, plasma-internal injection schemes.
**More: Controlled Electron-Beam Injection into Plasma Waves for Tailored Betatron-Radiation Generation …**

## PAdDLES: p-Adaptive Discretisations for Large Eddy Simulation in Industrial Geometry

Using the HPC capabilities of GCS, scientists assess a DGM (discontinuous Galerkin method) solver for scale-resolving simulations. The main goal of the solver is the evaluation of whether p-adaptive DGM can be used for fast and reliable LES of turbomachinery flows.
**More: PAdDLES: p-Adaptive Discretisations for Large Eddy Simulation in Industrial Geometry …**

## First Lattice QCD Study of B-physics With Four Flavors of Dynamical Quarks

Researchers from the three universities of Rome, the universities of Valencia, Paris XI, Groningen, Bonn, and Berlin have formed a team to carry out an extensive study of the physics of mesons containing a beauty quark. The results of this study will allow to address issues relevant for the phenomenology of the so-called flavor sector of the Standard Model and its possible extensions to New Physics.
**More: First Lattice QCD Study of B-physics With Four Flavors of Dynamical Quarks …**

## Magneticum: Simulating Large Scale Structure Formation in the Universe

In project *Magneticum*, scientists perform simulations of which the most computational intensive one covers a cosmic volume of 1 Gpc^{3. }This allows the researchers, for the very first time, to self consistently study galaxy clusters and groups, galaxies, and active galaxy nuclei (AGNs) within an enormously large volume of the Universe.
**More: Magneticum: Simulating Large Scale Structure Formation in the Universe …**

## The Spectrum of Supersymmetric Yang-Mills Theory

In a joint project of scientists of the Universitiy of Münster, the University of Frankfurt, and of DESY, Hamburg, researchers investigate the properties of the

N = 1 supersymmetric Yang-Mills theory, a theory which has supersymmetry and is part of many models for the physics beyond the Standard Model.
**More: The Spectrum of Supersymmetric Yang-Mills Theory …**

## Comprehensive *ab initio* Simulations of Turbulence in ITER-Relevant Fusion Plasmas

Scientists employed one of the world-leading plasma turbulence codes to carry out pioneering studies of actual large-scale fusion devices with an unprecedented level of realism, bringing the community one step closer to the ultimate goal of a “virtual tokamak”.
**More: Comprehensive ab initio Simulations of Turbulence in ITER-Relevant Fusion Plasmas …**

## Quantum Monte Carlo Simulation of Hydrogen at High Pressure

An international team of physicists used GCS supercomputer Hermit to elucidate important aspects of the hydrogen phase diagram related to the pressure-induced molecular dissociation and metallization and to improve the treatment of electronic correlation by developing algorithms based on Quantum Monte Carlo (QMC) methods.
**More: Quantum Monte Carlo Simulation of Hydrogen at High Pressure …**

## Transitions in Turbulent Rotating Thermal Convection

Scientists investigate the influence of temperature-dependent fluid properties (non-Oberbeck-Boussinesq effects) and rotation through direct numerical simulations for various fluids and a wide range of rotation rates to get closer to the understanding of realistic flows in nature and in engineering.
**More: Transitions in Turbulent Rotating Thermal Convection …**

## Observing the Bacterial Membrane Through Molecular Modeling and Simulation

One strategy to develop new and more efficient antibiotics that are less prone to generate resistance is to target and destabilize the bacterial membrane. In this context, investigating the physical and chemical principles governing the nature of bacterial membranes is of fundamental importance for understanding the functional role of lipid bilayers.
**More: Observing the Bacterial Membrane Through Molecular Modeling and Simulation …**