Vertical axis wind turbine airfoil design method under condition of large attack angle range

A range condition and design method technology, applied in the field of wind turbines, can solve the problems of complex flow field distribution and turbulent flow, improve wind energy utilization rate, and large angle of attack range, so as to improve aerodynamic performance, increase wind energy utilization rate, and torque The effect of increasing the coefficient

CN112507471AActive Publication Date: 2021-03-16HUBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-03-16

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Abstract

The invention discloses a vertical axis wind turbine airfoil design method under the condition of a large attack angle range. The method comprises the following steps: representing an airfoil profileby adopting a method of combining a class function and a B spline, and selecting an NACA0015 symmetric airfoil as an original airfoil; considering three groups of attack angle ranges, respectively establishing a wind turbine airfoil optimization mathematical model taking the maximum sum of tangential moment coefficients as an objective function, compiling a particle swarm optimization program, andcoupling RFOIL software to perform optimization design on the vertical axis wind turbine airfoil. According to the invention, the improvement of the tangential force of the airfoil profile under a large attack angle range is pursued, so that the aerodynamic performance of the whole HVAWT is improved. The novel HVAWT and the initial HVAWT aerodynamic performance are compared and analyzed, the airfoil profile more suitable for the HVAWT is obtained through optimization by optimizing three sets of different attack angle parameter ranges, the blade torque coefficient is integrally improved, and therefore the wind energy utilization rate of the HVAWT can be effectively increased.
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Description

technical field

[0001] The invention belongs to the technical field of wind power machines, and in particular relates to a design method for airfoils of vertical axis wind power machines under the condition of a large angle of attack range. Background technique

[0002] As a non-polluting, abundant and renewable clean energy, wind energy has attracted more and more people's attention and favor. Therefore, increasing the capacity output of wind turbines has always been the focus of research scholars in various countries. In recent years, because the H-type vertical axis wind turbine (H-VAWT) has the advantages of simple structure, easy installation and maintenance, high adaptability, no need for yaw device, simple blade manufacturing, etc., the research of H-VAWT has become a hot topic in the field of wind power generation. Research hotspots. H-VAWT mainly relies on the blades to capture wind energy, and the shape and structure of the blades directly affect the output of th...

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Embodiment Construction

[0071] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0072] It should be noted that, the experimental methods described in the following embodiments, unless otherwise specified, are conventional methods, and the reagents and materials, unless otherwise specified, can be obtained from commercial sources; in the description of the present invention, The terms "landscape", "portrait", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positio...