Attached unsteady cavitation fluid internal structure observation device and method

A technology of internal structure and observation device, which is applied in the fields of ship and underwater vehicle engineering, water conservancy and hydropower engineering, and can solve the problem that measuring equipment cannot accurately capture the fine structure of cavitation fluid

Active Publication Date: 2017-01-11
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF8 Cites 5 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Attached unsteady cavitation fluid internal structure observation device and method
  • Attached unsteady cavitation fluid internal structure observation device and method
  • Attached unsteady cavitation fluid internal structure observation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, see attached figure 1 , an attachment type unsteady cavitation fluid internal structure observation device, which includes: a water tunnel observation section, an experimental model 1, a glass window assembly 13, an endoscope camera 10, an endoscope lens 8, an endoscope light source 7, an endoscope Mirror 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 has a rectangular cross-sectional structure, and the top, front and sides are transparent plexiglass plates 2 for easy observation;

[0034] See attached figure 2 , the experimental model 1 is a wedge-shaped structure, the front part is a contraction section, and the rear part is an expansion section. Adhesive cavitation occurs in the flow separation area 4 of the expansion section, and two glass window assembly installation thre...

Embodiment 2

[0042] Embodiment 2, a method for observing the internal structure of an attached unsteady cavitation fluid, which uses the apparatus 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 to make the flow separation region 4 of the expansion section of the experimental model 1 produce attached cavitation;

[0044] b. observe whether the endoscope lens 8 observes the expected cavitation structure through the endoscope image display 12, otherwise, move the position of the endoscope lens 8;

[0045] c. setting the acquisition frequency and the acquisition time length of the endoscope camera 10;

[0046] d. Adjust the illumination area of ​​the endoscope light source 7 and the energy level of the light source, so that the observation image of the endoscope lens 8 is clear;

[0047] e. acquiring an image using the endoscopic camera 10 when the expected cavita...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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 in particular relates to an attached cavitation fluid experiment technology. Background technique [0002] Most of the cavitation phenomenon in the engineering field is a kind of attached cavitation. Studies have shown that the development process of cavitation has strong unsteady characteristics, accompanied by complex fluid forces. Attached cavitation fractures and the detachment and collapse of large-scale cavitation clouds often produce severe vibrations, noises, and pressure pulses. These problems involve the resolution of key issues in multiple 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 unsteadiness, which makes the internal structure of attached unsteady cavita...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap