  We study the vorticity patterns in relativistic heavy ion collisions with
respect to the collision energy. The collision energy is related to the
chemical potential used in the thermal - statistical models that assume
approximate chemical equilibrium after the relativistic collision. We use the
multiphase transport model (AMPT) to study the vorticity in the initial parton
phase as well as the final hadronic phase of the relativistic heavy ion
collision. We find that as the chemical potential increases,the vortices are
larger in size. Using different definitions of vorticity, we find that
vorticity plays a greater role at lower collision energies than at higher
collision energies. We also look at other effects of the flow patterns related
to the bulk viscosity and the shear viscosity at different collision energies.
We find that the shear viscosity obtained is almost a constant with a small
decrease at higher collision energies. We also look at the elliptic flow as it
is related to viscous effects in the final stages after the collision. Our
results indicate that viscosity plays a greater role at higher chemical
potential and lower collision energies.
