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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

[0025] 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.

[0026] In a specific embodiment of the present invention, an image acquisition device is used to take a picture of a droplet suspended under the surface of a horizontally placed auxiliary platform, and the picture is processed to extract a droplet profile curve. However, as the present invention, an auxiliary platform is not necessarily required. In actual life, the solid surface forming the hanging drop can be pointed, irregular, or orifice-shaped, such as a needle tube, so it is only necessary to obtain the image of the hanging drop.

[0027] Select a measuring point on the droplet profile curve; measure the geometric parameters related to the selected measuring point on the droplet profile ...

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Abstract

The invention provides a surface tension measurement method based on an axis-symmetrical droplet profile curve, which requires less samples, simple calculation process, convenience and quickness. The present invention is realized by the following technical solutions. A surface tension measurement method based on axisymmetric droplet profile curve, comprising the following steps: photographing a hanging droplet image, extracting the droplet profile curve; selecting a measurement point on the droplet profile curve; measuring the droplet profile curve The following geometric parameters related to the selected measurement points on the droplet profile curve are used to calculate the surface tension of the liquid using the following formula:

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 王军杨莉萍雒彩云钟秋李会东陶冶徐子君汪文兵
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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