In an effort to describe ion-conic acceleration, particle plasma simulation is used to study the generation of VLF waves below field-aligned potential drops and the effect of the resulting turbulence on the ion population in the suprauroral region. To model the situation, a weak, energetic electron beam traveling along the magnetic field is allowed to destabilize a cool electron-ion plasma. To describe the ion acceleration observed in the simulation, a theroetical model is developed using mode-mode coupling processes to generate the low phase velocity VLF waves with which the ions first interact. By scaling the simulation results to suprauroral conditions, we demonstrate that the VLF turbulence generated below field-aligned potential drops can account for the acceleration of ions observed in energetic ion conic distributions.