Advantages of the aerodynamic performance of micro‐Tesla turbines

Tesla turbines, featuring bladeless turbomachinery and energy transformation using the viscosity of working medium, have wide application prospects in renewable utilization as micropower equipment portable power units show better aerodynamic performance with a smaller turbine size. In this paper, miniaturization method including stator rotor, was proposed based on its sensitivity analysis results flow similitude law. A typical disc outer diameter 100 mm miniaturized to 50, 20, 10 mm, respectively. addition, both simplified single-channel model multichannel used practical applications, were simulated numerically. The that maintains two high-impact dimensionless parameters at their optimal values is simple, reasonable, effective. isentropic efficiency decreases slightly scaling down. However, for increases significantly decrease size, due impact outermost channel fields inner channels (called casing wall effect). This embodied by phenomenon part medium flows into through nozzle-rotor chamber, proportion conclusion, size exhibits has great potential field microturbomachinery.