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A fan blade with wave-shaped vortex generator and design method thereof

A vortex generator and fan blade technology, which is applied to wind turbines, engines, mechanical equipment and other directions that are consistent with the wind direction, can solve the problems of less research on the aerodynamic characteristics of vortex generators, and reduce the design workload, Improve blade lift, delay effect is obvious

Active Publication Date: 2021-12-28
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, existing research mainly focuses on vortex generators with a triangular cross-sectional shape, and the optimization of the installation position and arrangement of vortex generators. In contrast, there are few studies on the improvement of aerodynamic characteristics of vortex generators with other shapes.

Method used

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  • A fan blade with wave-shaped vortex generator and design method thereof
  • A fan blade with wave-shaped vortex generator and design method thereof
  • A fan blade with wave-shaped vortex generator and design method thereof

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0051] A fan blade with a wave-shaped vortex generator of the present invention, such as figure 1As shown, between the blade root 1 and the blade tip, a number of wave-shaped vortex generators 4 arranged symmetrically in pairs are installed at a suitable position near the blade suction surface 3 near the blade leading edge 2, and the cross-sectional shape of a single wave-shaped vortex generator 4 See figure 2 , due to the small thickness of the vortex generator, generally no more than 1cm, figure 2 Only list the sectional view on the chord direction of the blade, and the specific layout of the paired wave-shaped vortex generators 4 is shown in Figure 4 .

[0052] Such as figure 2 As shown, the wave-shaped vortex generator 4 can be considered to be compo...

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Abstract

The invention discloses a fan blade with a wave-shaped vortex generator and a design method thereof, belonging to the technical field of wind power generation. It includes a number of wave-shaped vortex generators arranged on the blade suction surface of the blade leading edge side; the wave-shaped vortex generators include a right-angled triangle substrate, the horizontal straight side of the substrate is connected with the blade suction surface, and a number of wave-shaped vortex generators are arranged on the hypotenuse of the substrate Bow-shaped fins, the arc length of several bow-shaped fins decreases along the vertical side to the horizontal straight side, and all the bow-shaped fins are tangent to the same tangent; the lowermost end of the hypotenuse is the area without bow-shaped fins; wave-shaped vortex generator Arranged symmetrically in pairs, the bow-shaped fins face the direction of incoming flow, the two wave-shaped vortex generators deflect at the same angle and the front ends move closer to the axis of the symmetry plane. This structure can more fully stir the airflow in the separator, increase the momentum and energy of the airflow near the wall, and generally more effectively delay the stall of the blade and increase the lift of the blade.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a fan blade with a wave-shaped vortex generator and a design method thereof. Background technique [0002] In recent years, the wind power industry is developing rapidly. Due to the randomness of wind direction and wind speed, fan blades tend to operate at large angles of attack in a short period of time, resulting in airflow separation on the surface of the blades. Its blade roots are also prone to airflow separation, resulting in reduced blade performance. For fan blades, it is necessary to develop new technologies to improve the aerodynamic performance of the blades and increase the power generation of the unit. Among the many quality-enhancing and efficiency-enhancing technologies for fan blades, vortex generators (VG for short) are relatively mature and widely used technologies. [0003] The working principle of the vortex generator is that durin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/00F03D1/06
CPCF03D80/00F03D1/0675Y02E10/72
Inventor 林伟荣蔡安民许扬李媛郑磊
Owner HUANENG CLEAN ENERGY RES INST
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