Superfluid helium is the simplest medium for study bulk turbulent processes and energy flux through the frequency range. Very low viscosity of superfluid helium and formatting turbulent system consisting from quantized vortexes allowed studying processes of vortexes formation and its decay. A vibration of bodies is the most common way to produce a turbulent state in superfluid helium. The most convenient devices for this purpose are tuning forks ? rigid, stable, and cheap elements of modern electronics.
In the report we?d like to review the last experimental results for using the tuning forks as a generator of the quantum turbulence and as a vortex detector, peculiarities of using a new type of tuning forks, which have bending and twisting modes of vibration. The last experiments indicated the drastical reduction of the critical velocity at which the transition into a turbulent state began for the twisting mode of the fork vibration.