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Multi-disciplinary optimization design method for airfoil profile of wind turbine

An optimized design and multi-disciplinary technology, applied to wind turbines, wind turbines, mechanical equipment, etc. that are consistent with the wind direction, can solve problems such as limited aerodynamic coefficients in determining design goals

Active Publication Date: 2015-05-13
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

Domestic scholars have also successfully built some numerical optimization platforms for wind turbine airfoils, but the determination of design goals is still limited to some aerodynamic coefficients (such as lift coefficients, etc.), and further development is needed.

Method used

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  • Multi-disciplinary optimization design method for airfoil profile of wind turbine
  • Multi-disciplinary optimization design method for airfoil profile of wind turbine
  • Multi-disciplinary optimization design method for airfoil profile of wind turbine

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Embodiment Construction

[0064] In order to make the object, technical solution and advantages of the present invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and examples.

[0065] According to the performance requirements of large-scale wind turbine blades and diversified operating environments, the aerodynamic performance requirements of "high efficiency, low load, wide operating range and stable performance under variable conditions" as well as the requirements for improving structural properties and reducing aerodynamic noise are used to construct airfoils The mathematical model of the multidisciplinary optimization problem, the composition of its objective function is as follows figure 1 shown. The objective function contains parameters in three aspects: parameters related to aerodynamic performance, parameters related to structural strength and stiffness, and parameters related to airfoil noise characteristics. The weight co...

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Abstract

The invention discloses a multi-disciplinary optimization design method for the airfoil profile of a wind turbine. According to performance requirements for blade enlargement and operating environment diversification of the wind turbine, aerodynamic performance, structure attributes and acoustic characteristics of the airfoil profile are optimized at the same time, various performance requirements of the airfoil profile are parameterized, a multi-disciplinary optimal objection function of the airfoil profile is established in combination with a weight coefficient method, and an optimization design system of the airfoil profile of the wind turbine is established in combination with an optimization algorithm. Numerical prediction indicates that multiple aspects of aerodynamic efficiency, off-design point performance, variable working condition stability and the structure of the novel airfoil profile designed according to the multi-disciplinary optimization design method for the airfoil profile of the wind turbine are promoted under the condition that the aerodynamic sound pressure level is not increased obviously, meanwhile, the working range of the airfoil profile is optimized, and the airfoil profile has low stalling characteristic parameters and performance stability parameters.

Description

technical field [0001] The invention belongs to the field of horizontal-axis wind turbine airfoil design, and in particular relates to the multidisciplinary optimal design of airfoils applicable to the middle and outer regions of horizontal-axis wind turbine blades. Background technique [0002] The airfoil is the basic element that constitutes a wind turbine blade. From the perspective of the airfoil, the transition, separation characteristics and control laws of the boundary layer under various flows have been studied, and the wind turbine airfoil with excellent performance has been developed, which is to realize the high efficiency, stability, and stability of the wind turbine blade under various harsh natural environments. basis for safe operation. In the early stage of the development of wind power blades, aeronautical airfoils were widely used for the aerodynamic and structural design of the blades. Based on the inherent needs of wind turbine airfoils, since the 1980...

Claims

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Application Information

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IPC IPC(8): F03D1/06
CPCY02E10/72
Inventor 杨科李星星白井艳徐建中
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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