Visualization Gallery
Simulation of the death of massive star in a Magneto-Rotational Core-Collapse Supernova explosion
The model was initially imparted with a moderate rotation and magnetic field resulting in a bipolar explosion along the rotational axis. Color coded is the entropy and the white lines are magnetic field lines. Stars of this type supposedly existed at an early age of the universe. They are thought to be the main source of heavy elements (heavier than iron) at early times of the chemical evolution of the universe. The 3D simulation confirmed for the first time that this type of stars can indeed produce these heavy elements.
Roger Käppeli, Seminar for Applied Mathematics, ETH Zurich
Particle paths near a cerebral aneurysm
The simulation and study of the fluid-structure interaction of an aortic arch was performed. Particle trajectories in the blood flow highlight the disturbed pathes near and inside the aneurysm. Paths are coloured by their integration elapsed time.
Gilles Fourestey, Swiss National Supercomputing Center
Molecular Dynamics Simulations of Membrane Proteins
Snaphots from molecular dynamics simulations of SecY translocon (left panel) and AmtB ammonium transporter (right panel). SecY translocon translocates secretory proteins across the membrane or inserts proteins into the membrane. Here we simulate SecY protein (colored in yellow) with a peptide (colored in orange) inserting into the membrane. Simulation of AmtB reveals the formation of a single-file water chain in the AmtB pore which is essential for the transport activity.
Sefer Baday, Simon Bernèche, Biozentrum, University of Basel
A voxel-based micro-finite-element model of a foam computes the mechanical response to a uniaxial load. Visualization highlights the significant inhomogeneity in computed effective strain within the foam volume.
Pinaki Bhattacharya, Biomechanics Section, KU Leuven, Harry van Lenthe, Institute for Biomechanics, ETH-Zurich
Implant in an osteoporotic bone
Strains in bone caused by mechanical loading of a fixation screw.
Juri Steiner, Harry van Lenthe, Institute for Biomechanics, ETH-Zurich
Magnetohydrodynamic equations are solved numerically in the rotating spherical shell to simulate evolution of the geomagnetic field. Parameters are extremely challenging due to the required computational resources. The composite image is created with VisIt and shows a 3D grid properly displayed in its native spherical space (bot. left), an azimuthal average created with VisIt's Data Binning operator (bot. right), a fixed radius surface extraction (top left), and the minimum, average and maximum curves of the magnitude of the Magnetic Field on that surface, plotted as a function of the polar angle.
Andrey Sheyko, Institute of Geo-Physics, ETH-Zurich
Cosmic Strings from the Abelian Higgs model
Cosmic Strings from the Abelian Higgs model solved on a torus of 1024^3 grid point . Gray-colored contours are the iso-surface of energy density, with the magnetic field intensity plotted on the side of the simulated volume.
David Daverio, Phd student, Geneva Cosmology and Astroparticle physics group, département de physique théorique, Université de Genève
Parallel Reader for HDF5-Pixie data
To support very large data grids used for example in Fusion, we implemented a parallel version of the Pixie reader for the VisIt software (available in version >= 2.6). The image demonstrates how different parallel distribution methods can be used.
Jean M. Favre, User support staff, CSCS
3D Navier-Stokes simulation of a nozzle-jet flow configuration
The turbulent jet is visualized by isosurfaces of lambda2 colored by local Mach number. The near-wall streaks of the turbulent boundary layer are identified by streamwise elongated structures. At the nozzle exit, the turbulent boundary layer immediately transforms into the jet shear layer which forces the full turbulent breakdown of the jet. Volume rendering shows the development of pressure waves travelling along the jet shear layer.
Stefan Buehler, Leonhard Kleiser, Institute of Fluid Dynamics, ETH-Zurich
Cartographic projections are very popular in geo-physics, and climate applications. We have implemented plugins for ParaView and VisIt (in the official version 2.6) to use the PROJ.4 library. This is an example of the Hammer projection with Climate Data
Jean M. Favre, User support staff, CSCS
Ray casting of vorticity magnitude in a piston/cylinder assembly
During the initial cycle of the compression phase, we can view some nice vortical structures developing in the fow with the aid of a ray-cast rendering of vorticity. The VisIt application was used here with 96 processors for this NEK5000 mesh of 166,800 spectral elements of degree 7.
Christos Frouzakis, Martin Schmitt, Aerothermochemistry and Combustion Systems Laboratory, ETH Zurich
Cardiac Resynchronization Therapy
A multiscale model for the study of the electrical activation system of a human heart using adaptive multiscale simulation techniques is used. We visualize the electric potential as it rises through the walls of the heart.
R. Krause, Università della Svizzera Italiana
A. Auricchio, Fondazione Cardiocentro Ticino
M. Potse, F. Prinzen, Maastricht University
Direct Numerical Simulation of Reactive Flows
The fully resolved turbulent field in an internal combustion engine is shown with the velocity magnitude, volume-rendered in the piston/cylinder assembly.
Christos Frouzakis, Martin Schmitt, Aerothermochemistry and Combustion Systems Laboratory, ETH Zurich
Plasma Physics and Fusion Energy
Simulations of plasma turbulence, MHD analysis of tokamak instabilities and of 3D magnetic confinement configurations are modelled and visualized to gain insight into the plasma behavior.
Paolo Angelino, Center for Research in Plasma Physics, EPF Lausanne
Low viscosity rotating flows and magnetic field generation in Earth-like planets
The equations of momentum transfer, heat transfer and electrodynamics in an electrically conducting and rapidly-rotating fluid are solved. Magnetic field lines that enter and exit the inner core are shown.
Andrew Jackson, Andrey Sheyko, Institute of Geophysics, ETH Zurich
Direct Numerical Simulations of high Reynolds number flow with vortex methods
Isosurfaces of helicity density show the presence of an axial flow in a simulation of reconnecting vortex tubes at Re=10,000, performed on 4096 cores of Monte Rosa using a remeshed Vortex Method.
Wim van Rees, Petros Koumoutsakos, Chair of Computational Science, ETH Zurich