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Multifunctional water film generation experiment device and method

An experimental device and multi-functional technology, applied in measuring devices, fluid dynamics tests, instruments, etc., can solve the problem that the thickness and uniformity of water film are difficult to control, cannot accurately simulate flow phenomena such as aircraft wing water film breakage, and cannot provide High-speed air flow field environment and other issues, to achieve good water supply stability, convenient installation, and good thickness uniformity

Inactive Publication Date: 2018-12-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

The thickness and uniformity of the water film produced in this way are difficult to control, flat and cannot provide a flow field environment for high-speed airflow, and cannot accurately simulate flow phenomena such as water film breakage on aircraft wings, and are not suitable for water that produces aircraft wing flow fields. membrane

Method used

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  • Multifunctional water film generation experiment device and method
  • Multifunctional water film generation experiment device and method
  • Multifunctional water film generation experiment device and method

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Embodiment Construction

[0026] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used in the present invention and are not intended to limit the scope of the present invention.

[0027] It can be seen from the accompanying drawings that a multifunctional flat water film generator is composed of a direct-flow air duct, a water injection device, an experimental metal plate, and a water return device. The direct air duct forms a stable flow field, forming a uniform and stable airflow in the test section. The sealing gasket plays the role of sealing the wind tunnel and helps the wind tunnel to form a uniform and stable airflow. Water is now pumped into the sump via the pneumatic connection. When the water overflows the tank, the overflowing water will form a water film on the metal plate under the effect of a uniform flow field. By changing the amount of w...

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Abstract

The invention discloses a multifunctional water film generation experiment device and method. The device comprises a straight flow wind tunnel body, a sealing gasket, a metal flat plate, a water collector and a pneumatic connector. The invention provides a water film generation experiment table which is capable of stably and continuously generating a water film easy for observing flow characteristics and can meet the requirements of the water film on a flow field environment; the experiment table can simulate the phenomena of crushing and the like of the water film, so that help is provided for researching a flow mechanism of the water film and improving the precision of an icing model, and data support can be supported for numerical simulation of flow icing of the water film.

Description

technical field [0001] The invention relates to a multifunctional water film generation experimental device and method, belonging to the fields of heat and mass transfer, fluid mechanics and flat water film flow characteristics in the research of aircraft icing and anti-icing / deicing. Background technique [0002] The icing of aircraft wings seriously affects the flight safety of aircraft, and the physical phenomenon of icing on the surface of aircraft wings includes the impact of supercooled water droplets, the formation of surface water film and ice, and the evaporation, condensation and sublimation that occur during the formation process. The heat and mass transfer process, the water film on the freezing surface and the ice formation process are the premise and basis for the research on the freezing mechanism and anti-icing technology. After the water droplets hit the wing, a thin water film will form on the surface. The water film then flows downstream, driven by gravit...

Claims

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Application Information

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IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 朱春玲朱程香赵宁宋华振王榆淞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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