Improving the Aerodynamic Performance of Radial Gas Microturbine with Double Curvature Blades

This research aims to improve aerodynamic performance of a radial gas microturbine from input to output, so that the best case can be selected. In this work, ANSYS CFX software was used. First, using one-dimensional model, different states were investigated and the best mode was selected. Then, by solving the governing equations, the efficiency of the designed turbine was obtained. This work combines computational work and experimental design to find the best blade profile for optimal operation. The geometrical parameters of rotor blade were considered as variable factors. Four levels were selected for each factor according to Credential references. According to the number of parameters and the number of levels determined, the appropriate orthogonal table can be selected and again numerically simulated with CFX software. The optimally designed rotor offers the highest efficiency and power output compared to the original rotor, such that the output power of the designed rotor is increased by 7.3%.