  Simulations have played a critical role in the advancement of our knowledge
of magnetic reconnection. However, due to the inherently multiscale nature of
reconnection, it is impossible to simulate all physics at all scales. For this
reason, a wide range of simulation methods have been crafted to study
particular aspects and consequences of magnetic reconnection. This chapter
reviews many of these methods, laying out critical assumptions, numerical
techniques, and giving examples of scientific results. Plasma models described
include magnetohydrodynamics (MHD), Hall MHD, Hybrid, kinetic particle-in-cell
(PIC), kinetic Vlasov, Fluid models with embedded PIC, Fluid models with direct
feedback from energetic populations, and the Rice Convection Model (RCM).
