minimal. When a load is applied on the Tesla turbine shaft slows down, i.e., the relative speed of the discs to the (moving) fluid increases as the fluid, at least initially, preserves its angular momentum. For example, in a radius where at 9000 RPM the peripheral disk speeds are , when there is no load on the rotor, the disks move at approximately the same speed as the fluid, but when the rotor is loaded, the relative velocity differential (between the SCS and the metal disks) increases and rotor speed has a relative speed of 45 m/s to the SCS. This is a dynamic environment, and these speeds reach these values over time delta and not instantly. Here we have to note that fluids start to behave like solid bodies at high relative velocities, and in the TT case, we also have to take into consideration the additional pressure. According to the logic, this pressure and relative velocity toward the faces of the discs, the steam should start behaving like a solid body (SCS) dragging on disk metal surfaces. The created "friction" can only lead to the generation of additional heat directly on the disk and in SCS and will be most pronounced in the peripheral layer, where the relative velocity between the metal discs and SCS discs is the highest. This increase in the temperature, due to the friction between the SCS disks and the turbine disks, will be translated to an increase in the SCS temperature, and that will lead to SCS steam expansion and pressure increase perpendicular to the metal discs as well as radially on the axis of rotation (SCS trying to expand, to absorb additional heat energy), and so this fluid dynamic model appears to be positive feedback for transmitting a stronger "dragging" on the metal disks and consequently increasing the torque at the axis of rotation. Design The guiding idea for developing the Tesla turbine is the fact that to attain the highest efficiency, the changes in the velocity and direction of movement of fluid should be as gradual as possible. Therefore, the propelling fluid of the Tesla turbine moves in natural paths or streamlines of the least resistance. A Tesla turbine consists of a set of smooth disks, with nozzles applying a moving fluid to the edge of the disk. The fluid drags on the disk through viscosity and the adhesion of the