Jonathan Isaac Kremen is a Master’s student in the working group (since 04/2026). The Master’s thesis develops a solver for axisymmetric unsteady (Navier–)Stokes flows: rotationally symmetric 3D flows are computed on the 2D meridian half-plane with radially weighted finite element spaces in NGSolve, first for the unsteady Stokes problem and then including convection. See also axisymmetric flows.