Numerical Simulation And Optimzattion Design Of The Moving Blade Adjustable Axial Flow Fan Of High Pressure

There is a long-term growth trend in world energy demand,improve the efficiency of energy use is imperative,domestic and overseas has increased the research of the fan industry.In this environment,this subject studies the aerodynamic design,numerical analysis and optimization design of the axial flow fan.The primary work as follows:1.This paper summarizes the latest aerodynamic design methods at domestic and overseas,Inductive the advanced research methods of numerical simulation and optimization at domestic and overseas.brought forward research content,made technical route.2.Adopts the cascade method and variable circulation flow pattern,based on NACA65-010 airfoil has retrofit design.Based on the AxSTREAM complete 3D modelling and pneumatic validation,the rationality of the design is verified.3.Using CFD method,based on NUMECA to perform numerical simulation of the fan.The meridian plane,different leaf height section,S3 flow surface and flow path were analyzed,given the fan performance curve about off-design point,lay the foundation for optimization.4.Based on Design3 D carried out the parameterized model of fan.the given dynamic rotor circumferential to scope changes,based on the inlet flow angle and the outlet flow angle of the blade as optimization variables.With efficiency and static pressure ratio as the optimization goal,using the optimal latin hypercube design method,with the aid of artificial neural network and genetic algorithm to proceed iterative optimization.Verifiy the rationality of the optimized design is by numerical simulation,provide a reference for the optimization design of the axial flow fan in the future.