Momentum transfer across shear flows in smoothed particle hydrodynamic simulations of galaxy formation
Momentum transfer across shear flows in smoothed particle hydrodynamic simulations of galaxy formation
We investigate the evolution of angular momentum in smoothed particle hydrodynamic (SPH) simulations of galaxy formation, paying particular attention to artificial numerical effects. We find that a cold gas disc forming in an ambient hot gas halo receives a strong hydrodynamic torque from the hot gas. By splitting the hydrodynamic …