A gas-liquid two-phase flow field observation device
A gas-liquid two-phase flow and observation device technology, which is applied to measuring devices, instruments, scientific instruments, etc., can solve the problems of lack of and inability to observe two types of phenomena
Active Publication Date: 2021-07-09
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology
However, the current test equipment is difficult to combine the advantages of the two, and it is impossible to clearly observe the two types of phenomena in the same vehicle test at the same time; in addition, there is also a lack of corresponding theory on how to expand the brightness and area of the bright spot in the center of the droplet guide
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] Such as image 3 As shown, the present invention provides a gas-liquid two-phase flow field observation device, the gas-liquid two-phase flow field is subjected to the aerodynamic force of the gas flow in the shock tube or nozzle by the liquid droplet located inside the shock tube or nozzle And form, the gas flow in the shock tube or the nozzle is the gas flow whose Mach number is greater than 0.3, which is generated by the start of the shock tube or th...
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Abstract
The invention discloses a gas-liquid two-phase flow field observation device, which belongs to the field of gas-liquid two-phase flow field observation, and includes a shock wave tube or a nozzle, and the shock wave tube and the nozzle are used for more than 0.3 Mach number Generation of high-speed airflow. The side wall of the shock tube or nozzle is flat, and a pair of observation windows are installed to observe the gas-liquid two-phase flow. The observation windows include a light source window and a shooting window, and an LED light source is arranged on the side of the light source window. A high-speed photographic camera lens with a frame rate greater than 10,000 fps is arranged on the side of the shooting window, and glass is embedded in the observation window, and the glass includes parallel glass and curved glass, the middle part of the glass is parallel glass, and the periphery of the parallel glass is connected Has curved glass. In the field of observation of gas-liquid two-phase flow in high-speed airflow, the schlieren device has the advantages of clearly observing the deformation of the droplet surface and the change of the wave system structure of the external airflow flow field, and has a certain improvement over the observation effect of the original parallel glass.
Description
technical field [0001] The invention relates to the field of flow field observation of interaction between high-speed air flow and spherical liquid droplets, in particular to a gas-liquid two-phase flow field observation device. Background technique [0002] Gas-liquid two-phase flow exposed to high-speed airflow widely exists in daily life and various engineering practices, such as using water curtains for shock wave protection in confined spaces, secondary atomization of fuel jets in combustion chambers, and high-speed aircraft Surface raindrop erosion protection, etc. The detailed observation of gas-liquid two-phase flow in high-speed gas flow is of great significance for improving industrial design. [0003] There are mainly two methods for observing the gas-liquid two-phase flow field in high-speed gas flow, namely the Schlieren / shadow method and the direct imaging method. Both have advantages and disadvantages for the observation effect of the flow field. The former...
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IPC IPC(8): G01N21/84
Inventor 易翔宇廖斌朱雨建杨基明陈农陈星
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS