Taylor-Couette experiment device for solid-state medium

An experimental device and medium technology, which is applied in the field of Taylor-Couette experimental devices, can solve the problems of dividing into two or more different types, and cannot realize Taylor-Couette rheological experiments in liquid media, and achieve comprehensive three-dimensional rheology. effect of shape

Active Publication Date: 2017-12-29
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, without using a solid separator, it is impossible to divide the liquid region into two or more different components in the radial direction or / and circumference as the experiment expects, or to divide the same liquid into two or more different colors. area for experiments
However, if a solid spacer is used, the Taylor-Courette rheological experiment of the liquid medium in the original sense cannot be realized.

Method used

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  • Taylor-Couette experiment device for solid-state medium
  • Taylor-Couette experiment device for solid-state medium
  • Taylor-Couette experiment device for solid-state medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Use plasticine in two colors, red and blue (corresponding to red Figure 9 Brighter colors in the medium, blue corresponds to Figure 9 The darker color in the middle) was made into a sector-shaped cross-section cylinder with an inner diameter of 20mm, an outer diameter of 32mm, and a height of 10mm, with a central angle of 180°, loaded into the device through the above steps, and connected all parts of the device. Turn on the camera, and the gear ratio used is 2:1, that is, the gear of the transmission part rotates 2 times, and the gear of the main part rotates once. The gear speed of the transmission part is 2 rev / min, the gear speed of the main part is 1 rev / min, and the pressure exerted on the cylindrical plasticine is about 20N. After rotating for different number of turns, the experimental results are shown in Fig. Figure 9 shown.

[0087] At the beginning, the two colors of plasticine were divided into two pieces of two completely different colors. After rota...

Embodiment 2

[0089] Two kinds of materials, lead (Pb) and tin (Sn), are used to make cylinders with an inner diameter of 47mm, an outer diameter of 51mm, and a height of 15mm. The cylinder is equally divided into 4 fan-shaped cross-section columns with a central angle of 90°. Two pieces of lead and two pieces of fan-shaped cross-section cylinders of tin are selected, and the lead and tin are alternately placed to form a cylindrical sample. like Figure 10 shown. Put it into the sample chamber of the Taylor-Couette experimental device of the present invention, use a pressurizing mechanism to pressurize the sample axially by 260KN, and after the inner and outer cylindrical walls of the sample chamber rotate relative to each other for 1 circle, take out the sample, and perform mechanical testing on the cross section of the sample. Grinding and polishing, observe the flow pattern of metal on part of the annular cross section with a microscope, the experimental results are as follows Figure ...

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Abstract

The invention discloses a Taylor-Couette experiment device for a solid-state medium and relates to the field of continuum mechanics. The device disclosed by the invention comprises a cylindrical sample chamber composed of inner and outer cylindrical walls and two annular end surfaces, a driving mechanism for driving the inner and outer cylindrical walls of the sample chamber to rotate relatively and a torque sensing recording system for recording relative rotary torques of the inner and outer cylindrical walls of the sample chamber, and further comprises a pressurizing mechanism for applying axial pressure to an end part of an indoor sample of the cylindrical sample chamber, a pressure sensing recording system for recording the axial pressure applied to the end part of the sample and an information acquisition system for recording a rheological condition of the sample solid-state medium. The device disclosed by the invention is simple in structure and easy to realize; the work of researching liquid-state medium rheological behaviors by the Taylor-Couette experiment device can be expanded to rheological researches of the solid-state medium.

Description

technical field [0001] The invention relates to the field of continuum mechanics, in particular to a Taylor-Couette experimental device for solid media, which is used to test the rheological behavior of solid media under the action of external force. Background technique [0002] In 1890, Couette first designed a cylindrical device rotating around a concentric axis to measure the viscosity coefficient of fluids, mainly liquids. Then in 1923, Taylor used this device to study the problem of fluid stability in [Taylor G.I.Stability of a viscous liquidcontained between two rotating cylinders.Philosophical Transactions of the Royal Society of London.1923(223):289-343.] . The device has since been named after the two scientists. The schematic diagram of the Taylor-Couette device is shown in figure 1 shown. [0003] The cylindrical sample chamber between the inner wall and the outer wall is filled with experimental liquid (liquid medium). When the inner and outer walls rotate r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/14
CPCG01N11/14
Inventor 王经涛林逵李政刘瑛马文龙符嫒嫒王嘉宇祝康
Owner NANJING UNIV OF SCI & TECH
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