Method for measuring solid particle three-dimensional concentration field and velocity field in gas/solid two-phase stream

A solid particle and concentration field technology, applied in the direction of measuring devices, particle suspension analysis, fluid velocity measurement, etc., can solve problems such as complex systems, large equipment investment, and difficult three-dimensional space motion trajectories, so as to improve recognition accuracy and overcome structural complexity Effect

Active Publication Date: 2007-12-05
ZHEJIANG UNIV
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Problems solved by technology

In order to obtain real three-dimensional moving images, multiple cameras can be used to shoot from different angles. The problem of this method is that the system is complex, the investment in equipment is large, the synchronization

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  • Method for measuring solid particle three-dimensional concentration field and velocity field in gas/solid two-phase stream
  • Method for measuring solid particle three-dimensional concentration field and velocity field in gas/solid two-phase stream

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Embodiment Construction

[0021] As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention is divided into two parts of hardware system and software system, and hardware system mainly comprises three parts: the double viewing angle stereoscopic mirror 2 that is fixed in front of high-speed camera lens, uses Based on the high-speed camera 3 for collecting images and the background computer for image processing, the two-view stereoscopic mirror 2 is placed and arranged in the following way by four plane mirrors, that is, the first plane mirror 4, the second plane mirror 5, and the third plane mirror 6 and the fourth plane mirror 7 are arranged successively from left to right, the first plane mirror 4 and the second plane mirror 5 are arranged in parallel, the third plane mirror 6 and the fourth plane mirror 7 are arranged in parallel, the first plane mirror 4 and the second plane mirror 5 are arranged in parallel with the third plane mirror 6 and the fourth plane mirror 7 are placed symmetrically,...

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Abstract

The invention discloses a kind of method of measurement the solid particle three-dimensional density field in the gas and solid two phase flow, velocity field and equipment. The particle flux transmitting tube is laid at the front of high rate stereoscopic vision system which is consisted by the double look-out angle lens stereoscope and the high rate camera and the jet stream particle is refracted through the double look-out angle lens stereoscope mirror face and the single high rate camera target area can achieve the particle flux graphic with two different angles at the same time and after the graphic is input the computer a program module which is consisted by the pattern recognition algorithm procedure and three-inversion projection algorithm procedure treats the particle diagram and then get the transient three-dimensional density field. The program module treats series microsecond class time sequence changeable particle graphic and gets the particle three-dimensional movement trace and the velocity field. It is stabilize by using the single camera system and overcomes the problem of multiple camera system's constructer is complex and the synchronism is bad.

Description

technical field [0001] The invention relates to a three-dimensional motion characteristic analysis technology of a gas-solid two-phase fluid, in particular to a method and a device for measuring a three-dimensional concentration field and a velocity field of solid particles in a gas-solid two-phase flow. Background technique [0002] The study of gas-solid two-phase flow is an important and cutting-edge topic in the field of turbulent flow research. At present, one of the main research directions for the trajectory of solid particles in gas-solid two-phase flow is the two-phase flow measurement technology, in which the particle image velocity measurement PIV technology And DPIV technology has been widely used and researched due to the advantages of non-contact full-field measurement, simple principle, and convenient implementation. However, the above technologies generally use a sheet light source and a single-lens photography system, which can only obtain two-dimensional pr...

Claims

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Application Information

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IPC IPC(8): G01N15/06G01N21/41G01C11/00G01P5/18G01M10/00
Inventor 岑可法黄群星王飞严建华池涌
Owner ZHEJIANG UNIV
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