problem: advection CtauS: .3 stab: su degree: 2 dm_plex: dim: 3 box_faces: 5,5,1 box_lower: 0,0,0 box_upper: 125,125,250 bc_inflow: 1,2,3,4,5,6 ksp: atol: 1e-4 rtol: 1e-3 type: bcgs snes: atol: 1e-3 lag_jacobian: 100 lag_jacobian_persists: mf_operator: implicit: ts: time_step: 1e-3 type: alpha max_steps: 10 dm_mat_preallocate_skip: 0 wind_type: rotation