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A Surface Tension Measurement Method Based on Axisymmetric Droplet Profile Curve

A profile curve and surface tension technology, applied in the direction of surface tension analysis, etc., can solve problems such as complex solution process, and achieve the effect of saving calculation time

Active Publication Date: 2021-07-13
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the drop shape method is to fit and solve each point on the droplet contour, which involves differential equations and optimization solutions, and the solution process is complicated

Method used

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  • A Surface Tension Measurement Method Based on Axisymmetric Droplet Profile Curve
  • A Surface Tension Measurement Method Based on Axisymmetric Droplet Profile Curve
  • A Surface Tension Measurement Method Based on Axisymmetric Droplet Profile Curve

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the drawings and the following embodiments. It should be understood that the drawings and the following embodiments are only used to illustrate the present invention rather than limit the present invention.

[0033] In a specific embodiment of the present invention, an auxiliary platform is adopted, and an image acquisition device is used to shoot an image suspended under the surface of the auxiliary platform (see figure 1 ) or a droplet image tiled on an auxiliary platform (see figure 2 ), but as the present invention, an auxiliary platform is not necessarily required. In real life, the solid surface above the hanging drop can be pointed, irregular, or orifice-shaped, such as a needle tube, so as long as the image of the hanging drop is obtained, Or a tiled droplet image would suffice.

[0034] The image is processed to extract the droplet profile curve. Select two measurement points that are ...

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Abstract

The invention provides a method for measuring surface tension based on an axisymmetric droplet profile curve, comprising the following steps: taking a tiled droplet image and extracting a droplet profile curve; Two measurement points; Measure the following geometric parameters related to the selected two measurement points on the drop profile curve and use the following formula to calculate the surface tension of the liquid: by The geometric parameter measurement of a point and the measurement of its related liquid volume can obtain the surface tension value relatively easily, without complicated calculations, and save calculation time; for the case of uneven surface tension, it is also possible to simply obtain the liquid Surface tension at any point.

Description

technical field [0001] The invention belongs to the technical field of physical property measurement, and relates to a surface tension measurement method based on an axisymmetric droplet profile curve. Background technique [0002] Surface tension is one of the important thermophysical properties in fluid mechanics. It has an important influence on the heat transfer and mass transfer of fluid interface, as well as the flow and heat transfer of micro-channels, so it has become the focus of related research. The surface tension measurement can provide people with relevant information on the interaction between gas-liquid and liquid-liquid. Through this information, various important properties such as adhesion, infiltration, biocompatibility, lubrication, and adsorption of materials can be deduced, thereby providing important support for the development of related science and technology. [0003] The measurement methods mainly include the maximum bubble method, the maximum te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/02
Inventor 杨莉萍王军钟秋雒彩云陶冶李会东汪文兵徐子君
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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