Patent ID: 7331752

Claim:
A method of conversion of the energy of continuous medium flows with a turbine, comprising: directing flow which is to be converted into a conversion system which has a surface or a part of a surface generating vortices wherein the continuous medium flow is influenced by a field of forces in its wall region of the surface or part of the surface within a range of distances yn along the normal from the surface or the part of the surface; a turn of the velocity vectors of the continuous medium particles is caused repeatedly in space and/or in time by said influence of said forces, said influence is causing said turn in a range of angles α alternately towards the surface or the part of the surface and from the surface or the part of the surface away and in a range of angles β alternately to the left and to the right with regard to the direction of the velocity vectors of the continuous medium particles of the near-wall flow; said range yn being from 0.005 to 0.3 times the boundary layer thickness δ, or being from 0.005 to 0.3 times the characteristic hydraulic dimension of the near-wall flow; said angle α being between α=0.02 to 0.5 radian; said angle β being between β=0.02 to 0.3 radian; the intensity of said influence or the strength of said forces is such that the minimum curvature radius R min , of the trajectory of the flow of said particles is from 2 to 30 average distances S along the normal from the surface or the part of the surface to the curved trajectory of the particles; wherein one or both of the below standing features a) and/or b) is/are valid a) the spatial repetition of said influence being λII=(3 to 30) yn along the direction of the wall flow and λ⊥=(1 to 10) yn perpendicular to the direction of the wall flow, b) the time repetition T being from 3 to 30 times the distances yn divided by the average velocity v in the boundary or wall layers, directing the converted flow into an internal axis symmetric volume of the conversion system along two systems of trajectories converging towards the axis of symmetry of said volume, the first of said systems forms a vortex flow just in front of a zone of conversion of the rotational moment so that the mechanical energy and rotational moment is concentrated in the axis symmetric volume and the mechanical energy and rotational moment is converted in the same volume by said turbine placed within said zone of conversion of the rotational moment and mechanical energy, whereas the second system of trajectories forms a flow with a reduced pressure, said pressure reduction ensuring evacuation of the continuous medium, which flows out of the zone of conversion of the energy and rotational moment; the first system of trajectories will at first fill the space, which is limited by two surfaces of revolution, and then the first system of trajectories assumes the form of helical lines; wherein the flow is swirled up in the second system of trajectories.