Many numerical techniques have been developed to solve the hydrodynamic and collisionless particle equations in this limit. For the hydrodynamic equations, the methods range from Eulerian finite difference techniques [8, 18, 56] to unstructured particle methods [29, 34]. For the collisionless particle or dark matter equations, the canonical choices are treecodes or PM and P M methods [36], although many variants have been developed to optimize computational performance and accuracy, including grid and particle refinement methods. The reader is referred to [39] for a comparison of several different numerical methods applied to a common problem of structure formation. A method for solving non-equilibrium, multi-species chemical reaction flows together with the hydrodynamic equations in a background FLRW model is described in [1, 9].

Physical and Relativistic Numerical Cosmology
Peter Anninos
http://www.livingreviews.org/lrr-1998-2
© Max-Planck-Gesellschaft. ISSN 1433-8351 Problems/Comments to livrev@aei-potsdam.mpg.de |