A Taylor-Couette experimental setup for solid-state media

An experimental device and medium technology, which is applied in the field of Taylor-Courette experimental devices, can solve the problems of being divided into two or more different types, and cannot realize the Taylor-Courte rheological experiment of liquid medium, so as to achieve comprehensive three-dimensional rheology The effect of form

Active Publication Date: 2021-01-26
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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  • A Taylor-Couette experimental setup for solid-state media
  • A Taylor-Couette experimental setup for solid-state media
  • A Taylor-Couette experimental setup for solid-state media

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Use plasticine in red and blue colors (red corresponds to Figure 9 The brighter color in , blue corresponds to Figure 9 The darker color in the middle), respectively made the internal diameter is 20mm, the external diameter is 32mm, and the height is 10mm, and the fan-shaped cross-section cylinder with the central angle of 180 ° is loaded into the device through the above steps, and connected to each part of the device. Turn on the camera, and the gear transmission ratio used is 2:1, that is, the gear of the transmission part turns 2 times, and the gear of the main part turns 1 turn. The gear speed of the transmission part is 2 revolutions / min, the gear speed of the main part is 1 revolution / min, and the pressure exerted on the cylindrical plasticine is about 20N. After rotating for different numbers of turns, the experimental results are shown in the figure Figure 9 shown.

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

Embodiment 2

[0089] Two materials, lead (Pb) and tin (Sn), are used to make a cylinder with an inner diameter of 47mm, an outer diameter of 51mm, and a height of 15mm, and divide the cylinder into four fan-shaped cross-section columns with a central angle of 90° Select two cylinders with a fan-shaped cross-section of lead and two cylinders with a fan-shaped cross-section of tin. The lead and tin are placed alternately to form a cylindrical sample. Such as Figure 10 shown. Put it into the sample chamber of the Taylor-Courtet experimental device of the present invention, adopt a pressurizing mechanism to pressurize the sample axially by 260KN, and after the inner and outer cylinder walls of the sample chamber are relatively rotated for 1 circle, take out the sample, and mechanically carry out the cross-section of the sample. Grinding and polishing, using a microscope to observe the flow form of the metal on the partial circular cross-section, the experimental results are as follows Figur...

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Abstract

The invention discloses a Taylor-Courte experimental device for solid media, which relates to the field of continuum mechanics. The device comprises a cylindrical sample chamber composed of inner and outer cylindrical walls and two annular end faces; and a driving sample The drive mechanism for the relative rotation of the inner and outer cylindrical walls; the torque sensor recording system for recording the relative rotational torque of the inner and outer cylindrical walls of the sample chamber; it also includes a pressurization mechanism that provides axial pressure to the end of the sample in the cylindrical sample chamber; records the sample The pressure sensing recording system for the axial pressure on the end; the information acquisition system for recording the rheological conditions of the solid medium of the sample. The device has a simple structure and is easy to implement, and can extend the research of the rheological behavior of the liquid medium to the rheological research of the solid medium from the classical Taylor-Couette device.

Description

technical field [0001] The invention relates to the field of continuum mechanics, in particular to a Taylor-Courte experimental device for solid medium to test the rheological behavior of solid medium 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 in [Taylor G.I.Stability of a viscous liquid contained between two rotating cylinders.Philosophical Transactions of the Royal Society of London.1923(223):289-343.] to study the problem of fluid stability . Since then, the device has been named after the two scientists. The schematic diagram of the Taylor-Coulter device is shown in figure 1 shown. [0003] Fill the cylindrical sample chamber between the inner wall and the outer wall with experimental liquid (liquid medium). When the inner and outer walls rotate relative to e...

Claims

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Application Information

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Patent Type & Authority Patents(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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