Theoretical analysis and experimental verification of the performance of the rolling turbines performance
2010
Abstract
The machine transforms fluid flow energy into mechanical energy of rotating motion without using any turbine blades. Starting from the balance of momentum in the Crocco’s formulation, the decisive influence of entropy gradient is shown.
The nonmonotonic distribution of radial velocity component is important for the onset of the driving force of angular instability. This instability and the existence of radial fluid motion give to arise the angular volume force.
The strong gradient of entropy in the boundary layer of inner rotating conical cylinder is dominant source of vorticity. Laboratory experiments and long-lasting test of the turbine in a water-power plant verified the principle utilization.