Design of high-efficiency turbomachinery blades for energy conversion devices with the three-dimensional prescribed surface curvature distribution blade design (CIRCLE) method

► The 2D and 3D CIRCLE method is presented and used to design high-efficiency turbomachinery blades and isolated airfoils. ► Two 2D turbine blades, one compressor blade, and one isolated airfoil geometry are redesigned. ► The aerodynamic advantages of the redesigned blades are investigated. ► A 3D compressor and a 3D turbine blade are designed with the method and their aerodynamic performance is computed. ► It is concluded the method is a robust tool for the design of high-efficiency 2D and 3D blades and airfoils.