A test method for jet reflection temperature field

A test method and temperature field technology, applied in the field of high-temperature and high-speed fluid flow research, to achieve the effects of saving test costs, reducing the number of startups, and solving insufficient bandwidth and speed

Active Publication Date: 2017-01-18
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the test problem of the jet reflection temperature field generated by the high-temperature and high-speed jet encountering the baffle

Method used

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  • A test method for jet reflection temperature field
  • A test method for jet reflection temperature field
  • A test method for jet reflection temperature field

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing and aero-engine jet reflection test implementation case:

[0024] see figure 1 , is the functional block diagram of the test system. The velocity field test system consists of three sets of five-hole probes, scanning valves and data acquisition and recording systems. Each group of temperature measuring probes is installed on the soil-shaped test rake bracket according to the designed position.

[0025] see figure 2 , is a schematic diagram of jet reflection under a 60° baffle. In the test, the size of the deflector is 3 × 6 meters, and the angle with the ground is 60°, and the angle with the plane of symmetry is 75°.

[0026] see image 3 , Schematic diagram of post-optimized rake arrangement. The baffle not only has a certain angle with the ground, but also deflects a certain angle with the symmetrical plane. Arranged as shown in the figure, the backflow of the left a...

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Abstract

The invention discloses a test method for jet reflection temperature field, which belongs to the research field of high-temperature and high-speed fluid flow, and specifically relates to a test method for high-temperature and high-speed jet reflection temperature field. It is characterized in that it includes the following steps: first, prepare test equipment, second, start testing after synchronizing the system clock with the jet flow generating device, third, data processing, fourth, analysis and calculation. The advantages of the present invention are: the number of measuring points, the amount of test data and the number of test vehicles are reduced to the range that the field can bear; it does not damage the ground of the field and ensures the stability of the measuring rake, and solves the problem of condensation and high temperature on the plastic pressure measuring tube in the field Impact: Multi-channel acquisition and delay transfer method is adopted for massive real-time high-frequency dynamic sampling data to solve the problem of insufficient bandwidth and speed of data acquisition and storage systems, while improving data accuracy, reducing the number of times the jet device is started, and saving test costs; solved the problem of testing One-to-one correspondence between data and jet flow status; a set of data acquisition, processing and analysis methods was established.

Description

technical field [0001] The invention belongs to the field of high-temperature and high-speed fluid flow research, and in particular relates to a test method for a high-temperature and high-speed jet reflection temperature field. Background technique [0002] Gas rudders in rockets, binary nozzles of vector thrust engines, acetylene flame welding, iron and steel smelting, research on spray effects of dry powder fire extinguishers, etc. will encounter reflection problems of high temperature, high pressure, and high speed jets. The research on the test method of the high-temperature and high-speed reflection flow field has certain reference significance for the research of these problems. Contents of the invention [0003] The object of the invention is to solve the test problem of the jet reflection temperature field generated by the high-temperature and high-speed jet flow encountering the baffle. [0004] Technical scheme of the present invention is: [0005] A jet refle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K13/02G01M15/14
Inventor 潘英孟轩张立夫张召明
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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