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Method and device for simulating aerodynamic and noise characteristics of airfoil with sawtooth trailing edge

A noise feature and trailing edge technology, applied in the field of data processing, can solve the problems of numerical simulation uncertainty, heavy calculation workload, troublesome grid division, etc.

Pending Publication Date: 2020-07-10
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, when numerically simulating the serrated trailing edge airfoil, its thin and pointed structure brings great trouble to mesh division
And the quality of the mesh at the tip of the triangle is difficult to guarantee, which brings great uncertainty to the numerical simulation
In addition, when simulating saw-tooth airfoils with different shapes and operating conditions, the grid must be re-divided each time, which greatly increases the workload of the simulation
[0004] It can be seen that the existing numerical simulation methods for the aerodynamic and noise characteristics of the airfoil with serrated trailing edge have technical problems of large computational workload

Method used

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  • Method and device for simulating aerodynamic and noise characteristics of airfoil with sawtooth trailing edge
  • Method and device for simulating aerodynamic and noise characteristics of airfoil with sawtooth trailing edge
  • Method and device for simulating aerodynamic and noise characteristics of airfoil with sawtooth trailing edge

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Embodiment Construction

[0045] Embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0046] Embodiments of the present disclosure are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. The present disclosure can also be implemented or applied through different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, a...

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Abstract

The embodiment of the invention provides an aerodynamic and noise characteristic simulation method and device for an airfoil profile with a sawtooth trailing edge, and electronic equipment, and belongs to the technical field of data processing, and the method comprises the steps: dividing the airfoil profile with the sawtooth trailing edge into a smooth airfoil profile main body and the sawtooth trailing edge; obtaining the lift resistance of the sawtooth tail edge relative to the flow field; and adding the item generated by the sawtooth trailing edge into a momentum equation item corresponding to the smooth airfoil main body to obtain a fluid equation of the aerodynamic and noise characteristics of the momentum source corresponding to the lift resistance generated by the airfoil with thesawtooth trailing edge relative to the flow field. According to the scheme, the sawtooth tail edge is modeled, so the flow field and the sound field under the influence of the sawtooth tail edge are obtained. The modeling method is time-saving, labor-saving, efficient, flexible and suitable for sawtooth tail edges of various shapes under different working conditions.

Description

technical field [0001] The present disclosure relates to the technical field of data processing, and in particular to a method and device for simulating aerodynamic and noise characteristics of an airfoil with a serrated trailing edge. Background technique [0002] With the rapid development of wind energy in recent years, wind turbines have spread all over the country. However, during the operation of the wind turbine, it brings a huge noise impact. Reducing the noise during wind turbine operation has become a current research hotspot. [0003] In recent years, the sawtooth trailing edge based on bionics has become the main passive control method to reduce the noise of wind turbines. However, when numerically simulating the serrated trailing edge airfoil, its thin and pointed structure brings great troubles to mesh division. And the quality of the mesh at the tip of the triangle is difficult to guarantee, which brings great uncertainty to the numerical simulation. In ad...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F119/14
Inventor 张明明蔡畅徐建中
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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