Multiscale simulation of blood flow in brain arteries with an aneurysm
  Interfacing atomistic-based with continuum-based simulation codes is now required in many multiscale physical and biological systems. We present the first results from coupled atomistic-continuum simulations on 190,000 processors. Platelet aggregation in the patient-specific model of an aneurysm has been modeled using a high-order spectral/hp element Navier-Stokes solver with a stochastic (coarse-grained) Molecular Dynamics solver based on Dissipative Particle Dynamics (DPD). 
Leopold Grinberg, Vitali Morozov, Dmitry A. Fedosov, Joseph A. Insley,   Michael E. Papka, Kalyan Kumaran, George Em Karniadakis
physics.flu-dyn physics.bio-ph