The Whisky code uses the Cactus framework to perform large scale parallel simulations of full nonlinear relativistic hydrodynamics. The code is optimized for simulating compact objects such as neutron stars and iron core collapse, concentrating on the gravitational wave output, and has led to a range of publications.
The code was built from a European Union Research Training Network and remains a large collaborative effort. Ongoing collaborations within the Cactus framework largely focus on high-order numerical methods, multi-block methods, and mesh refinement using Carpet.
Physical Systems and Engineering simulation: Astrophysics
Algorithms and computational methods: Finite differences