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Airfoil optimization design method and device for postponing inception cavitation

An optimized design and airfoil technology, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve problems such as the inability to guarantee the safety and stability of mechanical operation, and achieve complete cavitation-free operation and guarantee The effect of safe and stable operation

Pending Publication Date: 2021-06-01
CHINA AGRI UNIV
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AI Technical Summary

Problems solved by technology

[0004] The invention provides an airfoil optimization design method and device for postponing primary cavitation, which is used to solve the problem that the safety and stability of mechanical operation cannot be guaranteed due to primary cavitation at the leading edge of impeller blades

Method used

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  • Airfoil optimization design method and device for postponing inception cavitation
  • Airfoil optimization design method and device for postponing inception cavitation
  • Airfoil optimization design method and device for postponing inception cavitation

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0051] Combine below Figure 1-Figure 6 Describe an airfoil optimal design method, device, electronic equipment and storage medium for delaying incipient cavitation provided by the present invention.

[0052] The invention provides an airfoil optimal design method for postponing incipient cavitation, such as figure 1 As shown, the method includes the following steps:

[0053] Step 110, gen...

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Abstract

The embodiment of the invention provides an airfoil optimization design method and device for postponing inception cavitation. The method comprises the steps of: generating a two-dimensional plane graph of an airfoil based on design parameters of the airfoil; determining the maximum thickness value of the airfoil profile and the position of the airfoil profile in the bone line direction based on the two-dimensional plane graph of the airfoil profile, and determining the geometric design range of the front edge on the two-dimensional plane graph of the airfoil profile; stretching out and drawing back the front edge geometric design range through coordinate transformation in the bone line direction, and performing design of a front edge arc and a thickness diffusion section on the stretched front edge geometric design range; and stretching the geometric design range of the designed leading edge through inverse coordinate transformation in the bone line direction to obtain an airfoil profile for postponing primary cavitation. According to the invention, postponing of inception cavitation of the front edge of the impeller blade is realized through airfoil optimization design.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to an airfoil optimal design method and device for delaying incipient cavitation. Background technique [0002] When the pressure in the local area of ​​the hydraulic machinery drops below the vaporization pressure (saturated vapor pressure) of water, the process of the generation, development, and collapse of cavitation in water, as well as a series of physical and chemical changes resulting from it, is called cavitation. change. During the operation of hydraulic machinery, the cavitation problem has always been an important issue affecting the safety and stability of its operation. When cavitation occurs in hydraulic machinery, it will cause serious problems such as noise, vibration, and material damage. Therefore, how to expand the cavitation-free operating range of hydraulic machinery and delay the occurrence of cavitation in hydraulic machinery is very important f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20
CPCG06F30/17G06F30/20
Inventor 肖若富吴延昭陶然姚志峰王福军
Owner CHINA AGRI UNIV
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