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A Reconstruction Method of Droplet Size Distribution in Icing Cloud

A droplet size and droplet technology, which is applied in the field of wind tunnel testing, can solve the problems such as the full-size measurement of droplets that cannot achieve freezing clouds, and the parametric expression of freezing clouds.

Active Publication Date: 2021-09-21
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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Problems solved by technology

[0004] At present, domestic icing wind tunnels usually use a single-principle measuring instrument to measure the droplet size distribution characteristics of clouds and fog. Covering three orders of magnitude from the micron scale to the millimeter scale, a single instrument can only measure a small range of droplet sizes, and cannot achieve full-scale measurement of liquid droplets in icing clouds, so it is impossible to measure icing clouds. parametric expression of

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  • A Reconstruction Method of Droplet Size Distribution in Icing Cloud
  • A Reconstruction Method of Droplet Size Distribution in Icing Cloud
  • A Reconstruction Method of Droplet Size Distribution in Icing Cloud

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Embodiment Construction

[0034] Aspects of the invention will be described more fully hereinafter with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this invention. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Based on the teachings herein one skilled in the art will appreciate that the scope of the invention is intended to encompass any aspect disclosed herein, whether implemented alone or in combination with any other aspect of the invention. For example, it may be implemented using any number of means or implementations presented herein. Additionally, in addition to the aspects of the invention presented herein, the scope of the invention is intended to encompass an apparatus or method implemented using other structures, f...

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Abstract

The invention is applicable to the technical field of wind tunnel test, and provides a method for reconstructing the size distribution of icing cloud droplets, which includes the following steps: dividing the droplet size measurement interval into a plurality of droplet size channels, and calculating the size of each droplet Droplet number density, first liquid water content, and standard liquid water content in the size channel; determine the cut-off droplet size channel in the droplet diameter measurement interval, determine the overlapping droplet size channel, and calculate the overlapping droplet size channel Liquid water content in icing cloud; reconstructed icing cloud droplet size distribution. The present invention solves the technical problem in the prior art that a single instrument can only measure a smaller droplet size range, and can obtain the full droplet spectrum droplet size distribution and characteristic parameters from the measurement results of different instruments, that is, The full-scale measurement of liquid droplets in icing clouds and the parameterized expression of icing clouds are realized.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel tests, and in particular relates to a method for reconstructing the size distribution of icing cloud and fog droplets. Background technique [0002] When an aircraft is flying in clouds, supercooled water droplets (ie, liquid water droplets whose temperature is below freezing point) in the clouds will continuously hit the windward side of the aircraft, causing the surface to freeze. Aircraft icing widely exists in flight practice and seriously threatens flight safety. [0003] The icing wind tunnel is an important ground test equipment for aircraft icing research and aircraft component anti-icing system verification, and it plays an important role in aircraft icing airworthiness certification. The ability to simulate the icing cloud and fog environment is the core content of the performance of the icing wind tunnel. Accurate measurement and evaluation of the microphysical characteristics of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/02G06F30/20
CPCG01M9/02G06F30/20G06F2113/08
Inventor 郭向东郭奇灵陈舒越赵献礼王梓旭
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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