Taking multi-objective optimization of airfoil-shaped hydraulic structure based on NACA thickness distribution as objective，an optimization model was established based on Isight platform.In this model,airfoil parameterization was realized by Hicks-Henne Shaped function.Parameters were selected and optimized by multi-island genetic algorithm.Taking an airfoil-shaped measuring flume in the final stage of rectangular cannal which set on small plain irrigation area as example,constraint condition was determined by archetype conditions and hydraulic parameters.Multi-objective optimization model was established combining contraction-drag ratioδand submergence degreeS.The reliability and accuracy of Isight platform was verified by optimized results.Results showed that the coefficientsδandSincrease by 10.84% and 42.10% compared with the initial structure.Therefore,this research would provide recommendation for optimization of airfoil-shaped hydraulic structure and its application in irrigation system.
