Prof. Dr. C. Helzel, M.Sc. Bertram Taetz

 Dr. Bertram Taetz, research assistant at RUB 



    
        
       Ruhr University Bochum (Ruhr-Universität Bochum)  
       
       Faculty of Mathematics (Fakultät für Mathematik)

       Universitätsstraße 150 

       44780 Bochum 



       Office: NA 2/29 

       Phone:+49(0)234 / 32-23220

       E-mail: bertram.taetz@ruhr-uni-bochum.de

I am working in the Research Unit 1048:

"Instabilities, Turbulence and Transport in Cosmic Magnetic Fields".

In the project:

"Logically rectangular grid methods for the simulation of compressible MHD
equations in circular and spherical domains"

We focus on developing finite volume methods for ideal magnetohydrodynamic equations (MHD – equations) on logically rectangular grids in 2D and 3D.
See „A short description of our work“ for more details.

I am also working for the department of mathematics (numerical mathematics) at the Ruhr-University Bochum.

A short description of our work!

Publications

B. Taetz, Dissertation, 2012

C. Helzel, J.A. Rossmanith, B. Taetz, A high-order unstaggered constrained transport method for the 3D ideal magnetohydrodynamic equations based on the method of lines, (to appear in SIAM J. Sci. Comput.)

C. Helzel, J.A. Rossmanith, B. Taetz, An unstaggered constrained transport method for the 3d ideal magnetohydrodynamic equations, JCP 2011

Comparison of an unstaggered Constrained Transport Method on logically rectangular grids (2D)

The Orzag Tang Vortex example (see e.g. J.A. Rossmanith [An unstaggered, High-Resolution Constrained Transport Method For Magnethohydrodynamic Flows, SIAM (2006)]) is a well known test example for ideal MHD codes. The pictures below are color plots of the pressure computed on the corresponding grids (left picture belongs to very left grid). You should not see much difference by comparing the pictures, although they are computed on very different grids.