  We study the equilibrium dynamics of a single polymer chain under good
solvent condition. Special emphasis is laid on varying the drag force
experienced by the chain while it moves. To this end we model the solvent in a
mesoscopic manner by employing the Lowe-Andersen approach of dissipative
particle dynamics which is known to reproduce hydrodynamic effects. Our
approach captures the correct static behavior in equilibrium. Regarding the
dynamics, we investigate the scaling of the self-diffusion coefficient $D$ with
respect to the length of the polymer $N$, yielding results that are compatible
with the Zimm scaling $D \sim N^{-3/5}$.
