Tesla turbine principle
The Tesla turbine is a bladeless turbine driven by fluid shear forces. The invention of the legendary engineer Nikola Tesla was patented in 1913. It is called a bladeless turbine because it applies a boundary layer effect instead of the traditional direct impact of turbine blades with fluid. In addition, Tesla turbines are also known as "boundary layer turbines", "cohesion-type turbines" and "Prandtl layer turbines" (to commemorate German mechanics) Master Ludwig Prandt). Bioengineering researchers see it as a "multiple disk centrifugal pump." Tesla had dreamed of using it to generate geothermal power and become "our future energy."
The principle of a Tesla turbine is the boundary layer effect of the fluid. The fluid is affected by the viscous force and forms a very thin boundary layer at the edge of the pipe wall or other object. In the boundary layer, the surface is fixed. The flow rate is 0, and the farther away from the surface, the greater the speed. With this effect, a high-speed moving liquid can drive a set of discs to rotate. Therefore its efficiency is much higher than that of a conventional blade turbine.