The computational astrophysics group depends on strong hydrodynamical codes to perform high resolution and long term numerical simulations. One important task is to continue to revise and extend existing hydrodynamical codes. This includes implementing new numerical methodes and new physics modules to allow faster and more detailed simulations. Implementing and exploring new simulation methods like GPU based codes is another part of our work. Finally, Visualisation especially for large data sets also plays an important role and requires efficient codes.