A gas-liquid-solid three-phase abrasive flow swirling flow field online observation method and device

Abstract

The invention discloses an online observation method and device for a gas-liquid-solid phase abrasive particle flow rotational flow field. In the research for the gas-liquid-solid phase abrasive particle flow rotational flow field, theoretical analysis is carried out on the motion rule of abrasive particles and microbubbles in the rotational flow field forming process; meanwhile, a particle image velocimetry (PIV) method is used for carrying out online experimental observation on the rotational flow field; related data and images are extracted from PIV experimental equipment; the motion rule of the abrasive particles and the microbubbles in the rotational flow field forming process is visually shown; online observation in the rotational flow field forming process is achieved; accuracy of theoretical analysis is verified; and a foundation is laid for deeply researching the flow field characteristics of the gas-liquid-solid phase abrasive particle flow rotational flow field and a control method of the gas-liquid-solid phase abrasive particle flow rotational flow field. The online observation device for the gas-liquid-solid phase abrasive particle flow rotational flow field is provided. Online observation in the forming process of the gas-liquid-solid phase abrasive particle flow rotational flow field can be achieved, interference-free, transient and full speed measurement in fluid research can be achieved, and high universality is achieved.

Description

technical field [0001] The invention relates to the field of soft fluid surface grinding / polishing, and more specifically relates to an online observation method and device for a gas-liquid-solid three-phase abrasive particle flow swirl flow field. Background technique [0002] In high-tech fields such as modern optics, electronic information and thin film science, it is necessary to realize ultra-smooth surface manufacturing (Ultrasmooth Surface Manufacturing) on ​​the surface of precision optical parts and functional crystal materials, such as soft X-ray optical systems, laser gyro mirrors, high-density wave Demultiplexer, high-energy laser mirror, functional optical device, optical window, etc. [0003] A new method of gas-liquid-solid three-phase abrasive flow polishing, using a multi-directional injection method to drive a swirling flow field in a high-speed turbulent state in the large-area micro-pitch gap formed between the polishing tool and the workpiece surface, T...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of the objective limitations of analysis and test methods in the research process of the gas-liquid-solid three-phase abrasive flow swirl flow field, and proposes a gas-liquid-solid three-phase abrasive flow swirl Method and device for on-line observation of flow field

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