Aerodynamic design technology in multidisciplinary optimization was discussed in this paper through the analysis of multidisciplinary design optimization (MDO) for turbine.Complex three-dimensional (3-D) blade profile generation technique was proposed by incorporating the swept stacking axis method and a two-dimensional cascade parametric modelling method based on cascade characteristic parameters and Bezier spline.General restrictions were given through the analysis of the mathematic model used in aerodynamic optimization.And an optimization method was also proposed according to the aerodynamic design and restrictions at different stages.For 3-D aerodynamic simulation

tgrid generation

modelling

solving and post processing can be completed automatically by further programming based on CFX.The optimization results show that an increase of 2.3% in turbine efficiency has been reached

the number of rotating blades reduces by 13.21% and the overall mass of blade decreases by 8.96%.