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Design method of high-fidelity non-uniform shark-imitating groove microstructure of large cooing tower fan blade

A design method and tower fan technology, applied in the field of engineering bionics, can solve the problems of limited reliability and life of the whole machine, low fidelity, large differences, etc., and achieve the effect of ensuring the actual use effect and efficient actual use effect

Inactive Publication Date: 2014-08-06
SHANDONG UNIV OF TECH
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Problems solved by technology

For the fan blades of large cooling towers, the linear speeds of different radial position areas are different or even quite different during normal operation. , it is obviously impossible to achieve efficient drag and noise reduction effects in different radial positions at the same time, and the improvement of the reliability and life of the whole machine is also relatively limited

Method used

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  • Design method of high-fidelity non-uniform shark-imitating groove microstructure of large cooing tower fan blade
  • Design method of high-fidelity non-uniform shark-imitating groove microstructure of large cooing tower fan blade
  • Design method of high-fidelity non-uniform shark-imitating groove microstructure of large cooing tower fan blade

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Embodiment Construction

[0037] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] refer to Figure 1 ~ Figure 3 , to be in accordance with figure 1The process shown is to design a high-fidelity, non-uniform shark-like groove microstructure on a large six-bladed, standard-finned cooling tower fan blade. The relevant dimensions and working parameters of this type of cooling tower fan blade are: the length of a single cooling tower fan blade 1 is 10m, the diameter of the wheel is 2.5m, and the design rated speed is 110rpm.

[0039] Step 1: Virtual partitioning of cooling tower fan blades and parameter extraction.

[0040] refer to figure 2 , Figure 4 First, it is determined that the design of the shark-like groove microstructure 2 is only carried out on the front and back of the blade al...

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Abstract

The invention relates to a design method of a high-fidelity non-uniform shark-imitating groove microstructure of a large cooing tower fan blade, in particular to a method for performing high-fidelity non-uniform shark-imitating placoid scale groove microstructure differentiation design according to different radial region linear speeds of different fan blades so as to achieve efficient bionic resistance and noise reduction and belongs to the technical field of engineering bionics. The design method has the advantages that the important fact that the Reynolds number using 'wing chord' as the characteristic length changes in the wind wheel radial direction is fully considered when resistance and noise reduction structure design is performed on the large cooing tower fan blade, the design method is scientific and reasonable compared with an existing uniform design method; compared with existing abstract and simplified low-fidelity shark-imitating resistance and noise reduction structure design, the design method of the high-fidelity non-uniform shark-imitating groove microstructure can ensure the efficient actual using effect.

Description

technical field [0001] The present invention relates to a design method of high-fidelity and non-uniform shark imitation groove microstructure of fan blades of large cooling towers, more particularly, it refers to the high-fidelity and non-uniform design method according to the difference of linear velocity in different radial regions of fan blades. The invention relates to a differential design of a shark-like shield scale groove microstructure to realize efficient bionic drag reduction and noise reduction, which belongs to the field of engineering bionic technology. Background technique [0002] Amazing natural creatures provide many learning paradigms for human beings to solve engineering problems. The shark known as the "shark skin effect" is a successful example of biological evolution. The currently known "shark skin effect" couples various biological functions such as drag reduction, noise reduction, desorption, and protection. The level groove structure is an import...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/26F04D29/66
Inventor 韩鑫夏连明王娟靳印凯陈亮亮
Owner SHANDONG UNIV OF TECH
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