  We have modeled hydrodynamical tori in the Klu{\'z}niak-Lee pseudo-Newtonian
potential. The tori in equilibrium were perturbed with uniform sub-sonic
velocity fields: vertical, radial and diagonal respectively, and allowed to
evolve in time. We identify the eigenmodes corresponding to those of slender
tori. The results of our simulations are relevant to the investigation of
high-frequency quasi-periodic oscillations observed in stellar-mass black hole
binaries.
