Computational study of ITER-like dissipative divertor plasmas in the collisional limit

A two dimensional (2-D) combined edge plasma/Navier-Stokes neutral transpor t model is used in a computational study of dissipative divertor plasmas in the collisional limit for neutrals, with ITER-like plasma conditions and s cale lengths. The neutral model contains three momentum equations that are coupled to the plasma through ionization, recombination and ion-neutral ela stic collisions. The neutral transport coefficients are evaluated including both ion-neutral and neutral-neutral collisions. The structure of fully de tached plasma solutions is studied for ITER plasma conditions. These detach ed solutions are obtained through a combination of impurity radiation, from a simplified impurity model, and neutral flow baffling. Solution sensitivi ties are elucidated to: (a) baffle location, (b) upstream plasma density an d Lyman-cr opacity, (c) volume recombination and (d) neutral-neutral collis ions.