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Method for measuring liquid water content

A liquid water content and measurement method technology, applied in the field of ice wind tunnel test, to achieve the effects of high measurement accuracy, wide range of icing environments, and simple structure

Inactive Publication Date: 2016-11-16
AECC SHENYANG ENGINE RES INST
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Problems solved by technology

[0003] The purpose of the present invention is to provide a liquid water content measurement method to solve or at least alleviate at least one problem in the background art

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  • Method for measuring liquid water content
  • Method for measuring liquid water content

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[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The invention discloses a method for measuring liquid water content, and relates to the technical field of icing tunnel test. The method for measuring liquid water content comprises the following steps: S1, selecting a test measuring rod; S2, placing a convex lens at one end of the measuring rod, and an image sensor on the other end, connecting the image sensor with a computer processing system through a data line, and setting a point light source on the side of the convex lens away from the image sensor; S3, measuring the wind speed of the icing tunnel test section by using a wind velocity measuring instrument; S4, converting the optical signals received by the image sensor into digital signals, and transmitting the digital signals to the computer processing system; S5, calculating the thickness of an ice layer by using the computer processing system; and S6, calculating the liquid water content in the air flow. The invention has the advantages that: the shielded area of the optical signal changes with the change of ice thickness, so as to realize the real-time measurement of liquid water content; the method has the advantages of wide range of freezing environment, simple structure, and high measurement precision.

Description

technical field [0001] The invention relates to the technical field of ice wind tunnel tests, in particular to a method for measuring liquid water content. Background technique [0002] The measurement of liquid water content in the test ice wind tunnel is a key link in the test process. Whether the liquid water content in the icing environment can be accurately measured is particularly important for the analysis of anti-icing results. There are various methods for measuring liquid water content at home and abroad, such as disc ice thickness measurement method, hot wire measurement method, ultrasonic measurement method, total pressure tube measurement method and PDPA measurement method. The disc ice thickness measurement method is usually manual measurement, and the manual measurement error is large; the hot wire measurement method has a complex structure, requires high uniformity of the flow field, and has a large measurement error for large-diameter supercooled water dropl...

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Application Information

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IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 周建军丁立袁美名刘国朝李云单
Owner AECC SHENYANG ENGINE RES INST
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