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Vortex generating delta wing and vortex generating device

A technology of eddy current generation and delta wings, which is applied in heat exchange equipment, lighting and heating equipment, heat transfer modification, etc., can solve the problems of less energy and poor heat transfer effect, and achieve small flow resistance, convenient processing, and flow The effect of low resistance

Active Publication Date: 2021-07-27
西安联创分布式可再生能源研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that traditional delta-wing vortex generators have poor heat transfer enhancement effects, the purpose of the present invention is to provide a vortex-generating delta-wing and a vortex generating device. The flow resistance is smaller, the enhanced heat transfer capacity is higher, and the highest enhanced heat transfer ratio can reach 16.348%. It can use less energy at the same temperature as the enhanced heat transfer to achieve the goal of saving energy and reducing consumption. In addition, it is convenient to process and can be stamped by mold Mass production, low raw material consumption

Method used

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  • Vortex generating delta wing and vortex generating device
  • Vortex generating delta wing and vortex generating device
  • Vortex generating delta wing and vortex generating device

Examples

Experimental program
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Effect test

Embodiment 1

[0059] This embodiment discloses a vortex generating device, which includes a rectangular pipe 2 with a rectangular radial section, the inner cavity from the inlet end of the rectangular pipe 2 to the outlet end of the rectangular pipe 2 is a fluid domain, and the inner bottom of the rectangular pipe 2 is 420 mm long. 2 The width of the inner bottom is 140mm;

[0060] It also includes 10 delta wings 1 vertically arranged on the inner bottom of the rectangular pipe 2. The delta wing 1 includes a right-angled triangular plate body. The opening direction of -1 is perpendicular to the right angle side of the plate body; the bottom edge of the tooth groove 1-1 is parallel to the right angle side of the plate body, and the distance from the bottom edge of each tooth groove 1-1 to the right angle side of the plate body is equal; The slots 1-1 are arranged at equal intervals, and the length of the base of each slot 1-1 is equal to the distance between adjacent slots 1-1. The length o...

Embodiment 2

[0083] Analysis of the flow field characteristics of the vortex generating device in Example 1 through the experimental model of the comparative example, and according to the relevant theory of fluid mechanics, the following analysis results can be obtained:

[0084] Such as Figure 10 is the single-side streamline distribution of a vortex generator with a Reynolds number of 13000 and a distance D between adjacent alveoli 1-1 of 4 mm. It can be seen from the figure that on the outer edge of the delta wing 1 on the left, a positive-rotating mainstream flow direction vortex structure is formed. When the fluid flows through the space between the adjacent tooth slots 1-1, a certain rotational motion is formed, and it follows the flow direction. development, merging with the mainstream flow to the vortex structure. Due to the existence of the sawtooth vortex structure in delta wing 1, a multi-shear layer structure is formed, which better forms a strong velocity gradient distributi...

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Abstract

The invention relates to a vortex generating delta wing and a vortex generating device. The vortex generating delta wing comprises a right-angled plate body, wherein at least two tooth spaces are formed in an inclined edge of the plate body, and an opening direction of each tooth space is perpendicular to a right-angled edge of the plate body. By arranging the structure of a part reasonably, compared with a conventional delta wing type vortex generator, the flowing resistance is smaller, the intensified heat exchange ability is higher, the highest intensified heat exchange proportion can reach 16.348%, less energy is used at the same intensified temperature, and a target of saving the energy and reducing the consumption is achieved. Meanwhile, the device is convenient to process, can produce by adopting die punching in batches, and is small in consumption of raw materials.

Description

technical field [0001] The invention belongs to the technical field of enhanced heat exchange, and in particular relates to a vortex generating delta wing and a vortex generating device. Background technique [0002] The vortex generator is a widely used passive enhanced heat exchange element. It induces the generation of vortex to thin or destroy the thermal boundary layer, thereby improving the degree of flow chaos in the nearby flow public office, and promoting the avoidance of mixing between fluid and main fluid. , to achieve the purpose of enhancing heat transfer, Johnson and Joubert were the first to apply vortex generators to the field of enhanced heat transfer. They studied the cross flow on the cylindrical surface of a delta wing with a constant angle of attack. The results showed that around the delta wing The heat exchange is strengthened. At present, the use of vortex generators to enhance heat exchange has been widely used in the fields of electric power, chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F13/12
CPCF28F13/12
Inventor 尹佳佳段纪成程凯史军党蒋荣辉周向民
Owner 西安联创分布式可再生能源研究院有限公司