One-Dimensional Aerodynamic Design of Micro Radial Turbine Based on Genetic Algorithm

Abstract

Micro radial inflow turbine, as an important component of micro gas turbine, directly determines its reliability. To improve design accuracy and efficiency of micro radial inflow turbine, a one-dimensional aerodynamic design method is investigated in this paper. The one-dimensional design software was developed based on the reference of the conventional radial inflow turbine aerodynamic design method, and the main aerodynamic design parameters were selected by combining genetic algorithm, the reliability of the design software was verified by comparing the calculation results with the commercial turbine one-dimensional design software. A three-dimensional model of the micro radial inflow turbine was developed and numerical simulation model were carried out using CFX software. The simulation results are compared with the parameters obtained from the one-dimensional aerodynamic design and the deviation between the two is less than 5%, indicating that the one-dimensional aerodynamic design method can provide reliable preliminary design and performance prediction for the micro radial inflow turbine.