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Device and method capable of simultaneously measuring velocity field and concentration field

A technology for measuring velocity and concentration fields, which is applied in measuring devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc., to achieve the effects of improving accuracy, facilitating analysis, and measuring accurately

Active Publication Date: 2016-10-12
山东世精液压设备有限公司
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  • Application Information

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Problems solved by technology

However, for the solid particles in the gas-solid two-phase flow it measures, its dual-view stereo mirror acquires images from two different viewing angles of the object, and cannot simultaneously measure the velocity field and concentration field of the fluid under the same viewing angle.

Method used

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  • Device and method capable of simultaneously measuring velocity field and concentration field
  • Device and method capable of simultaneously measuring velocity field and concentration field

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0025] like figure 1 As shown, the device for simultaneously measuring the velocity field and the concentration field described in the present invention mainly includes a double pulse laser 1, a sheet light source 2, a transparent mixing device 3, a spectroscopic device 5, a camera 4, a computer 6, a laser 1 and a sheet light source 2 Connected, the plane sheet light emitted by the sheet light source 2 is irradiated on the transparent mixing device 3, and its sheet light plane passes through the central axis of the transparent mixing device 3 and is coplanar with the plane of the flow field to be measured. The side wall of the transparent mixing device 3 A fluid inlet is provided on the top; the light splitting device is located on the refraction light path of the transpa...

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Abstract

The invention provides a device and method capable of simultaneously measuring the velocity field and the concentration field of fluid and especially suitable for online measuring of the velocity field and concentration field during fluid mixing. The method includes: simultaneously adding tracer particles and fluorescent reagent into to-be-measured fluid or one fluid of mixed fluid, using a particle image velocity measuring method to measure the velocity field, and using a laser-induced fluorescence method to measure the concentration field. A light splitting device is arranged in front of a measuring camera, and a laser-irradiated image part and an induced-fluorescence-irradiated image part are formed in the same image through light splitting, filtering and light path convergence. The shooting object of the two images is the same, but images of different wavelength ranges are displayed. The laser-irradiated image part is used to perform velocity field analysis, and the induced-fluorescence-irradiated image part is used to perform concentration field analysis. The device and method has the advantages that the velocity field and the concentration field are measured simultaneously by using one measuring camera, and the problem that multi-camera shooting is poor in synchronism, complex in structure and high in cost is solved.

Description

technical field [0001] The invention relates to the field of fluid flow measurement, in particular to a device and method for simultaneous measurement of fluid velocity field and concentration field. Background technique [0002] The flow measurement in the fluid mixing process involves the measurement of the velocity field and the concentration field of the fluid. The PIV measurement method is widely used in the velocity field, and the PLIF measurement method is used in the concentration field. The method of measuring PIV and PLIF at the same time generally adopts the method of two or more cameras. The disadvantage is that the system structure is complex, the images are not overlapped and synchronized, the data analysis and processing are difficult, and the cost of using two or more cameras is high. . Application number CN200710069863.4, titled: Method and device for measuring the three-dimensional concentration field and velocity field of solid particles in gas-solid two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01G01N21/64G01P5/26
CPCG01N21/01G01N21/6402G01P5/26
Inventor 管贤平邱白晶欧鸣雄董晓娅董立立贾卫东
Owner 山东世精液压设备有限公司
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