| The research on the rapid design of the blade is of great concern because of its complexity,long period and difficulty.The rapid blade design was studied to build the blade design platform in this paper.The rapid design theory,the platform construction and the parametric modeling were studied.The aerodynamic design module was established by introducing an unsteady aerodynamic calculation method.Supported by structural design module,the blade design platform was built,and the effectiveness of the platform design function was verified by an example.Firstly,the platform windows and controls were built through Windows Forms software.C# language was used to write the trigger events corresponding to the relevant controls then.The connection and call methods between the platform and MATLAB,CATIA software were studied,in order to realize fast modeling and quick calculation capabilities of the blade rapid design platform.Secondly,in order to build aerodynamic module perfectly,the unsteady aerodynamic method was used for the aerodynamic design of the blade.It could be described that the airfoil aerodynamics were calculated by using dynamic stall theory and the induced velocity was calculated by using dynamic inflow theory.And then the validity and practicability of the calculation results of the module were verified.Thirdly,the selection of the blade profile parameters was studied according to the design requirements of the blade.Additionally,the mechanic characteristics of new-designed blade was studied.Then,the construction of the structural design module was completed.Finally,the CFD method was used to analyze the blade flow fields and aerodynamic characteristics.The instantaneous values of the rotor blades at various moments in the flow field were calculated by using the sliding mesh algorithm.Calculating the pressure coefficient from the leading edge to the trailing edge of each section of blade,the direction to improve performance was pointed out. |
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