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High-speed effluent navigation body ventilation vacuole multiphase flow characteristic measurement experiment device and method

An experimental device and a technology for an air vehicle, which is applied in the field of an experimental device for measuring the multiphase flow characteristics of aeration and cavitation in a high-speed water-exiting air vehicle, can solve the problems of poor controllability and safety, repeated analog experiments, and inability to observe the fusion process of air and cavitation. problem, to achieve the effect of good accuracy

Inactive Publication Date: 2018-12-07
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aeration cavitation experiment in the water tank under normal pressure cannot meet the similarity of the number of cavities, so the fusion process of the aeration cavitation cannot be observed, and there is a big problem
However, the real underwater launch experiment is limited by the experimental conditions such as the amount of drug and the ejection method, so that the generated ventilation bubble phenomenon is extremely complicated, the controllability and safety are poor, and the experimental cost is very staggering, and it is impossible to carry out large-scale repeated analog experiments.

Method used

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  • High-speed effluent navigation body ventilation vacuole multiphase flow characteristic measurement experiment device and method
  • High-speed effluent navigation body ventilation vacuole multiphase flow characteristic measurement experiment device and method
  • High-speed effluent navigation body ventilation vacuole multiphase flow characteristic measurement experiment device and method

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specific Embodiment 1

[0032]An experimental device for measuring the characteristics of ventilated cavitation multiphase flow of a high-speed water-exiting vehicle in a decompressed environment, see appendix figure 1 , is characterized in that it is composed of four major parts: a decompression system, a ventilation system, a motion system and a data acquisition system. The decompression tank is placed in the center, and a synchronous belt slide table is placed inside the decompression tank. A yellow headlight is placed 0.5 meters from the right and rear sides of the decompression tank, and a yellow headlight is placed 1 meter from the right side of the decompression tank. Vacuum pump, the vacuum pump is connected to the decompression tube through a transparent air tube, a high-speed camera is placed 1 meter in front of the decompression tank, and a laptop computer connected to it to record data is placed 1 meter to the right of the high-speed camera, and 1.5 meters behind the decompression tank A...

specific Embodiment 2

[0059] 1. An experimental device for measuring ventilation cavitation multiphase flow characteristics of a high-speed water-exiting vehicle in a decompressed environment, characterized in that:

[0060] (1) Decompression tank, if attached figure 2 shown

[0061] The main body of the decompression tank is composed of a top head 2 , a head convex flange 3 , a head concave flange 5 , a cylindrical shell 6 , a bottom head 20 and a conical base 22 from top to bottom.

[0062] There is a lifting ring 1 welded on the outermost top of the elliptical top head 2, and the lower end is welded together with the head convex flange 3, and there is an O-ring 4 between the head convex flange 3 and the head concave flange 5, And through the connection of bolts and nuts, the concave flange 5 of the head and the cylindrical shell 6 are welded together to ensure the tightness and detachability of the decompression tank.

[0063] The upper part of the cylindrical shell 6 is provided with a sucti...

specific Embodiment 3

[0097] The invention provides an experimental device for measuring the multiphase flow characteristics of ventilated cavitation of a high-speed water-exiting vehicle in a decompressed environment. The functions of each experimental system are as follows: Figure 8 shown.

[0098] The method of determining the material and size of the decompression tank is: use the Blake criterion combined with numerical simulation to obtain the influence range of the boundary on the ventilation cavity, thereby determining the size of the decompression tank, and finally use the relevant theories of structural mechanics combined with numerical simulation. method, and referring to the GB150 national standard for fixed pressure tanks, the thickness of the decompression tank body and the sight glass was obtained.

[0099] The way to achieve good air tightness of the decompression tank is: use 24 bolts for a week to fasten between the concave and convex flanges of the top head, and an O-ring groove ...

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Abstract

The invention discloses a high-speed effluent navigation body ventilation vacuole multiphase flow characteristic measurement experiment device and method and relates to the high-speed effluent navigation body ventilation vacuole multiphase flow field. A motion device, an air charging device, a lighting device and an experimental data acquisition device are combined to form a set of unique experimental method for studying a ventilation vacuole fusion mechanism and a ventilation vacuole flow characteristic. According to the characteristics of a decompression tank, a unique movement mode, an illumination mode, an observation mode, and the air charging mode of accurately controlling an air charging flow and pressure are designed, and problems that a previous ventilation vacuole experiment research device can not provide a decompression environment, can not accurately control a ventilation parameter, and can not overcome the work of the motion device in the decompression environment and soon are solved. An artificial ventilation vacuole fusion process in a real underwater launching process can be simulated, the flow state characteristic of a navigation body is researched and the deviceand the method have a great advantage on the aspect of researching ventilation vacuole fusion.

Description

technical field [0001] The invention relates to the field of ventilating cavitation multiphase flow of a high-speed water-exiting vehicle, in particular to an experimental device and method for measuring the characteristics of a high-speed water-exiting vehicle's ventilating cavitation multiphase flow. Background technique [0002] Most of the early ventilated cavitation experiments were carried out in cavitation water holes, or in water tanks under normal pressure. The observation of the ventilation cavitation experiment in the cavitation water hole is a steady process, and the flying body is placed horizontally, so that the cavitation formed by artificial ventilation will be deflected by the influence of gravity, which is different from the actual underwater launch. The experimental environment is very different. Not only that, the missile model scaling experiment in the water tunnel experiment is not carried out in a non-inertial coordinate system, nor is the unsteady fl...

Claims

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Application Information

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IPC IPC(8): G01M10/00
Inventor 姚熊亮胡少峰张忠宇陈祥斌龚瑞岩
Owner HARBIN ENG UNIV
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