Method for determining installing position and dimension of wind power blade vortex generator

Abstract

The invention discloses a method for determining the installing position and dimension of a wind power blade vortex generator. The method includes the steps that 1, an initial smooth blade calculationbasin three-dimensional model is established; 2, grid division of the initial smooth blade calculation basin three-dimensional model is performed; 3, numerical simulation calculation of transition isconsidered; 4, the installing position of the vortex generator is determined; 5, the dimension of the vortex generator is determined; 6, the effect of functions of the vortex generator is evaluated;7, the process is optimized. With the method, the control effect on boundary layer flow separation of the vortex generator can be greatly improved, the defects that wind field particle sediment is long in test period, the dimension of the vortex generator can not be well determined, and therefore the requirement for a project period and the requirement for complete production network of blades ofa manufacturer for wind driven generators can not be met are overcome, and theoretical bases are provided when the installing position and dimension of the wind power blade vortex generator are determined more reasonably.

Description

technical field [0001] The invention relates to the technical field of renewable new energy wind power blades, in particular to a method for determining the installation position and size of a vortex generator of a wind power blade. Background technique [0002] The trend of large-scale wind power blades is becoming more and more obvious. With the increase of blades, the phenomenon of laminar flow separation on the surface of the blades of wind turbines is more and more likely to occur during actual operation. Therefore, controlling the laminar flow separation on the surface of large wind power blades It is particularly important to realize blade increase and drag reduction. [0003] Manufacturers of wind turbines improve the flow conditions on the blade surface by installing vortex generators on the blade surface, that is, the vortex generators are used to suppress the separation of the laminar boundary layer on the blade surface, so as to achieve the effect of the vortex g...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and propose a method for determining the installation position and size of the wind turbine blade vortex generator considering the transition, which can greatly improve the control of the vortex generator on the boundary layer flow separation effect, and overcome the deficiencies of the wind turbine manufacturer’s demand for the project cycle and the demand for supporting production of the blades due to the long test period of the wind field particle deposits and the inability to determine the size of the vortex generator, in order to be more reasonable Provide a theoretical basis for accurately determining the installation position and size of the wind turbine blade vortex generator

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