2187
Comment:

← Revision 6 as of 20131011 16:39:22 ⇥
2220

Deletions are marked like this.  Additions are marked like this. 
Line 33:  Line 33: 
Here's an animated GIF of that simulation run:  {{attachment:ehcountour.gif}} 
Line 35:  Line 35: 
{{attachment:ehcountour.gif}}  An animated GIF of the same particleincell simulation run as described above. 
Research Gallery
Here are some 'pretty pictures' from simulation work I've done. (You can click the images for a fullresolution view.)
An integralequationbased simulation of (a mockup of) one of the fields inside highfield nuclear magnetic resonance imager. The object being examined is a (mockup of) battery electrodes used in research on novel Lithium batteries. This is an accelerated firstorder calculation using a chargecurrent formulation. I am presently working on methods to make calculations like this faster, more accurate, and more efficient.
A sample scattering problem solved using a novel, efficient GPUbased implementation of an unstructured finiteelement method. The incident planewave electric field is shown as pseudocolor values on the scatterer, while the scattered electric field is shown as arrows. The computation was performed at order $N=4$ on a mesh of $K=78745$ elements using an incidentfield formulation \cite{hesthaven_nodal_2002} and characteristic absorbing boundary conditions. It achieved and sustained more than 160 GFlops/s.
A particleincell simualtion of an injector gun for a proposed particle accelerator at ANL. The electric and magnetic field are shown as contour surfaces in blue and red, respectively. The simulation uses novel coupling methods between a highorder timedomain finite element method and a particle discretization.
An animated GIF of the same particleincell simulation run as described above.
Pseudocolor plot of the density of a vortex shedding flow behind a square obstacle at Re=100 and Ma=0.1. This was computed using my Discontinuous Galerkin solver hedge on an Nvidia GTX 260. Movie
A few more images are available on my research page.