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A three-dimensional reconstruction method and experimental device for flame temperature of single droplet combustion

A technology of flame temperature and three-dimensional reconstruction, which is used in measurement devices, internal combustion engine testing, and engine testing.

Inactive Publication Date: 2020-12-15
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

3D tomography can study non-axisymmetric flames, but traditional tomography cannot deal with the case of a droplet in the flame

Method used

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  • A three-dimensional reconstruction method and experimental device for flame temperature of single droplet combustion
  • A three-dimensional reconstruction method and experimental device for flame temperature of single droplet combustion
  • A three-dimensional reconstruction method and experimental device for flame temperature of single droplet combustion

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Embodiment

[0032] A flame temperature three-dimensional reconstruction method and experimental device for single droplet combustion, which can be applied to equipment such as internal combustion engines, coal combustion boiler devices, and gas turbines. figure 1 A schematic diagram showing the structure of the experimental device for the three-dimensional reconstruction method of the flame temperature of single droplet combustion. The experimental device mainly includes an optical fiber imaging bundle, a high-speed camera 22, a telephoto macro lens 21 and 4 sets of optical lens systems. The optical fiber imaging bundle includes a first input end 12 of the optical fiber imaging bundle, a second input end 14 of the optical fiber imaging bundle, a third input end 19 of the optical fiber imaging bundle, a fourth input end 1 of the optical fiber imaging bundle, and output ports 20 and 4 of the optical fiber imaging bundle root fiber bundle 15. Taking the first optical lens system as an exampl...

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Abstract

The invention discloses a flame temperature three-dimensional-reconstruction method and experiment device of single-droplet combustion. A new three-dimensional-tomography-reconstruction method and anexperiment device of inducing single-droplet combustion by forced ignition of a spark plug are included. The three-dimensional-reconstruction method includes the following steps: step 1, dividing flame of single-droplet combustion into a series of horizontal slices; step 2, carrying out flame temperature reconstruction for each layer of the horizontal slices; and step 3, superimposing all the horizontal slices to obtain a three-dimensional flame temperature field. The experiment device includes a droplet making system and a spark plug forced-ignition system. The forced-ignition system uses electrical sparks, which are generated between tips of two copper needles, to ignite a single droplet on a tip of a quartz wire. The method and the device realize three-dimensional reconstruction of non-axisymmetric flame temperature in a single-droplet combustion process, can accurately measure the flame temperature of single-droplet combustion, and facilitate study of combustion characteristics ofinternal combustion engines.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engine equipment, and in particular relates to a method and experimental device for three-dimensional reconstruction of flame temperature of single droplet combustion. Background technique [0002] Because of the high power density of the internal combustion engine, it is widely used in national defense and economic construction. The spray process is the most important process of the internal combustion engine, which determines the economy, power and emission of the internal combustion engine, and the flame temperature is directly related to these characteristics of the internal combustion engine. Therefore, it is necessary to measure the flame temperature accurately. [0003] Spray combustion is an extremely complex process, including multiple sub-processes such as turbulence, chemical reaction, evaporation, and fragmentation. Because the spray contains a large number of fine drople...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/04
CPCG01M15/04G01M15/048
Inventor 黄荣华张郁黄胜周培饶晓轩张国军
Owner HUAZHONG UNIV OF SCI & TECH
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