During the 2nd and 3rd December we hosted the CAAPS workshop Demystifying Numerical Dissipation in Simulation Codes. We had some interesting talks about numerical errors in general and numerical dissipation in particular, including numerical viscosity and diffusivity.

 

With our to external participant Martin Obergaulinger from the University of Valencia and Philippe Bourdin from the University of Graz we engaged in discussions about potential sources of numerical dissipation and how to best quantify it. Finally, we had a day long hackaton session where we started to look into numerical codes and their dissipation rate in dependence of the spatial resolution by using the Taylor-Green vortex as test case.

This event was organized by Michael Schlottke-Lakemper (HPCS), Christoph Knote (Model-based Environmental Exposure Science) and Simon Candelaresi (HPSC)