Measuring device for high-speed multi-direction impact loads of liquid drips

A measuring device and impact load technology, applied in the field of fluid mechanics, can solve the problems of not considering the impact angle, the lack of measurement results of the droplet impact load, etc., and achieve the effect of good applicability

Active Publication Date: 2015-06-24
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Measurements of droplet impact loads in this range are still lacking
In addition, when the liquid drop obliquely impacts the solid wall, not only the positi

Method used

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  • Measuring device for high-speed multi-direction impact loads of liquid drips
  • Measuring device for high-speed multi-direction impact loads of liquid drips
  • Measuring device for high-speed multi-direction impact loads of liquid drips

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] The invention provides a measuring device for the high-speed multi-directional impact load of liquid droplets, such as figure 1 and figure 2 As shown, the measuring device includes a base 1, a support 2, a crossbar 3, a droplet gun 4, a sensor system 5, a sensor acceleration system 6 and a photoelectric measurement system 7. There are two supports 2, and the bottom of the support 2 is Fixed on the base 1, the top of the bracket 2 is connected to the two ends of the crossbar 3, and the droplet gun 4 is arranged on the crossbar 3, and the droplet gun 4 is used to provide accelerated droplets; the photoelectric measurement system 7 is arranged on two brackets 2, And it is divided into two groups, one group is near the exit of the droplet gun, which is used to measure the droplet exit time to start the sensor acceleration system, and the other gr...

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Abstract

The invention discloses a measuring device for high-speed multi-direction impact loads of liquid drips, and belongs to the field of fluid mechanics. Acceleration systems of the liquid drips and a sensor and the sensor capable of measuring the multi-angle impact loads are adopted, and through accelerating the liquid drips and the sensor and changing the inclination angle of colliding with a solid wall, positive pressure and tangential force which are generated by multi-angle impact, on the solid wall, of each liquid drip can be measured, wherein the impact speed of the liquid drip is lower than 100 m/s, and therefore the measuring device is better adapted to actual rain driving by wind. The measuring device has the advantages of being high in liquid drip impact speed and capable of measuring the multi-direction impact loads, and has important meaning for the fields of aviation safety, airworthiness authentication, high-speed train safety and high-rise buildings.

Description

technical field [0001] The invention belongs to the field of fluid mechanics, and in particular relates to a measuring device for high-speed and multi-directional impact loads of liquid droplets. Background technique [0002] Liquid-solid two-phase flow problems widely exist in the fields of industry, construction, transportation, and environment, among which droplet impact phenomenon is common in wind-driven rain, spraying and other problems. Understanding the size of the droplet impact load is of great significance for analyzing the erosion of raindrops on the outer walls of buildings, water and soil loss, and the safety of high-speed train operation in storms. [0003] During the falling process, the raindrops are affected by gravity, buoyancy and air resistance, showing a shape with a flat bottom and a round top. The process of a droplet hitting a solid surface can be divided into the following stages: the first stage is the initial collision stage, and the droplet chan...

Claims

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Application Information

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IPC IPC(8): G01L23/00
Inventor 蒋崇文王泽辉李涵滕浩许晨豪
Owner BEIHANG UNIV
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