Originally designed by inventor Nikola Tesla, the Tesla turbine is an improved version of the standard turbine with easier to manufacture parts and near 100 percent efficiency. It never really caught on because efficiency drops when a load is applied to a level basically identical to standard turbines, and infrastructure was always set up to manufacture standard turbines. It takes advantage of fluid dynamics to use parallel disks instead of blades, in turn spinning an axle. 

This model functions very well. I recommend not blowing into the model because sustained flow is required for proper function. If you want to see the spin more, notice the axle ends in a rectangular prism with side lengths of 2.269 mm, make your parts to fit 2.27 or 2.28.