Castro is part of the BoxLib suite of astrophysical hydrodynamics codes that collectively provide the simulation capabilities to model explosive astrophysical phenomena. Castro specializes in supersonic flows, where radiation can be an important driver of the dynamics. Castro includes radiation hydrodynamics, self-gravity, thermal diffusion, nuclear reaction networks, and various equations of state and runs on massively parallel architectures.
CASTRO: A New Compressible Astrophysical Solver. I. Hydrodynamics and Self-gravity Almgren, A. S., Beckner, V. E., Bell, J. B., Day, M. S., Howell, L. H., Joggerst, C. C., Lijewski, M. J., Nonaka, A., Singer, M., & Zingale, M. 2010, ApJ, 715, p. 122