Attachment type unsteady cavitation fluid internal structure observation device and method

A technology of internal structure and observation device, which is applied in the field of attached cavitation fluid experiment, and can solve the problem that measurement equipment cannot accurately capture the fine structure of cavitation fluid

Active Publication Date: 2018-06-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an endoscope-based attachment type unsteady cavitation fluid internal structure observation device and method for the problem that the existing measuring equipment cannot accurately capture various fine structures inside the cavitation fluid

Method used

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  • Attachment type unsteady cavitation fluid internal structure observation device and method
  • Attachment type unsteady cavitation fluid internal structure observation device and method
  • Attachment type unsteady cavitation fluid internal structure observation device and method

Examples

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Effect test

Embodiment 1

[0032] Example 1, see attached figure 1 , Attachment type unsteady cavitation fluid internal structure observation device, which includes: water tunnel observation section, experimental model 1, glass window assembly 13, endoscope camera 10, endoscope lens 8, endoscope light source 7, endoscope Endoscope lighting system 9, endoscope image display 12 and endoscope image acquisition and storage computer host 11;

[0033] The observation section of the water tunnel includes: test section 3, transparent plexiglass 2; test section 3 is a rectangular section structure, and the top, front and side surfaces are transparent plexiglass plates 2 for easy observation;

[0034] See attached figure 2 , Experimental model 1 is a wedge-shaped structure, the front part is a contraction section, and the rear part is an expansion section. Adherent cavitation occurs in the flow separation area 4 of the expansion section. Two glass window assembly installation threaded holes are arranged in the flow se...

Embodiment 2

[0042] Embodiment 2, the method for observing the internal structure of an attached unsteady cavitation fluid, which uses the device for observing the internal structure of an attached unsteady cavitation fluid as described in Example 1, and includes the following steps:

[0043] a. Adjust the flow parameters so that the flow separation area 4 of the expansion section of the experimental model 1 produces adhesion-type cavitation;

[0044] b. Observe through the endoscope image display 12 whether the expected cavitation structure is observed in the endoscope lens 8; otherwise, move the position of the endoscope lens 8;

[0045] c. Set the collection frequency and collection time length of the endoscopic camera 10;

[0046] d. Adjust the illumination area of ​​the endoscope light source 7 and the energy level of the light source to make the image observed by the endoscope lens 8 clear;

[0047] e. Use the endoscopic camera 10 to collect images when the expected cavitation structure genera...

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Abstract

The invention belongs to the technical field of ship and underwater vehicle engineering and water conservancy and hydropower engineering, and especially relates to an attached cavitation fluid experiment technology. According to the technical scheme, an attached unsteady cavitation fluid internal structure observation device comprises a water tunnel observation section, an experiment model (1), a glass window component (13), an endoscope camera (10), an endoscope lens (8), an endoscope light source (7), an endoscope lighting system (9), an endoscope image display (12) and an endoscope image acquisition and storage computer host (11). By using the endoscopic technology, an effective means is provided for observation and research of the internal complex structure of attached cavitation fluid.

Description

Technical field [0001] The invention belongs to the technical fields of ship and underwater vehicle engineering and water conservancy and hydropower engineering, and particularly relates to attached cavitation fluid experiment technology. Background technique [0002] Most of the cavitation phenomenon in the engineering field is an attached cavitation. Studies have shown that the development process of cavitation has strong unsteady characteristics, accompanied by complex fluid forces. Adhesive cavitation fractures and the shedding and collapse of large-scale cavitation cloud clusters often produce violent vibration, noise and pressure pulses. These problems involve the solution of key problems in many engineering fields. [0003] The flow of attached unsteady cavitation fluid involves almost all complex flow phenomena such as turbulence, momentum and mass conversion, compressibility and unsteady, which makes the internal structure of attached unsteady cavitation fluid very compli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/00
CPCG01M11/00
Inventor 王国玉王畅畅黄彪张敏弟刘涛涛张汉哲
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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