Numerical simulation method, system and equipment for stall flutter of airfoil structure and medium

Abstract

The invention relates to the technical field of flutter analysis, and particularly provides an airfoil structure stall flutter numerical simulation method, system and device and a medium. The airfoil structure comprises an airfoil part and a tuned mass damper, and the method comprises the steps that geometric parameters of the airfoil structure are obtained, a fluid area of the airfoil structure is determined according to the geometric parameters, and a flow field grid is generated based on the fluid area; obtaining aerodynamic force information of the airfoil structure at the current moment; the flutter angular displacement of the airfoil structure at the previous moment is obtained; determining the flutter angular displacement response of the airfoil structure at the current moment based on the aerodynamic force information of the airfoil structure at the current moment and the flutter angular displacement of the airfoil structure at the previous moment; and updating the flow field grid based on the flutter angular displacement response of the airfoil structure at the current moment. According to the invention, aerodynamic characteristics and structural response of the airfoil structure in a complex flow field can be simulated, and accurate data support is provided for optimization design and stall flutter analysis of the airfoil structure.

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