Planer supercavity generation device
A technology for generating device and supercavitation, applied in measurement devices, instruments, fluid dynamics tests, etc., can solve the problems of low movement speed and difficulty in generating natural cavitation, achieve high movement speed, reduce object mass, and experimental data full effect
Inactive Publication Date: 2012-06-20
ZHEJIANG SCI-TECH UNIV
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Problems solved by technology
However, in conventional drag tanks, it is difficult to generate natural cavitation due to the low speed of movement
Method used
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[0024] The present invention will be further described below in conjunction with drawings and embodiments.
[0025] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, the water tank 2 of the present invention is placed on the lower base plate 9 between the four columns 7, the top of the water tank 2 is pressed and fixed with the upper cover plate 1, and the upper cover plate 1 and the lower base plate 9 are respectively equipped with fixed angle steel 8 to prevent the water tank from Move, the joints between the four uprights 7 and the lower base plate are fixed and hemmed 10, the lower end of the uprights 7 is fixed by a tripod 14, and the bottom is connected with casters 11; the upper and lower sides of the water tank 2 have flange holes 6 respectively, and the lower flange holes and ball valves 13 Connection; the organic glass window plate 3 is installed after the middle part of the front of the...
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The invention discloses a planer supercavity generation device, which is characterized in that: a water tank is arranged under a lower baseplate; an organic glass window plate and a steel plate are arranged on the same positions in front of and at the back of the water tank; the steel plate is provided with guide grooves and a long through groove communicated with the water tank; a trolley is arranged between the two guide grooves; one end of the trolley is connected with a spring; and the other end of the trolley is pulled by a launching trigger fixed on an upright post. After the launching trigger is opened, a moving object connected with the trolley can move underwater at high speed; a high-speed camera and a lighting lamp are arranged outside one side of the organic glass window plateof the water tank, wherein the high-speed camera is connected with an industrial control computer. The water tank restricts a supercavity generated by the object moving at high speed from developing in the thickness direction of the water tank, thereby forming a two-dimensional supercavity form. According to the planer supercavity generation device, the form development characteristic of the supercavity generated around the object moving at high speed on near liquid surface can be distinctly observed by utilizing a high-speed photography technology; the trolley device can ensure the motion linearity of the object; and high-speed moving objects with different head types can be replaced to complete experimental data.
Description
technical field [0001] The invention relates to an experimental device of fluid pressure in fluid mechanics, in particular to a planar supercavitation generating device accompanied by supercavitation generated near a water free surface. Background technique [0002] When the velocity of the moving body entering the water is large enough, the water pressure near the head of the moving body will be lower than the local saturated vapor pressure, thus local cavitation occurs. When the speed reaches a certain critical value, a cavity that completely surrounds the moving body will form around the moving body, called supercavitation. Since the density of the mixed gas in the supercavitation is significantly lower than that of water, the movement resistance of the moving body in the supercavitation will be greatly reduced, and the drag reduction characteristics of the supercavitation will appear. [0003] Supercavitation technology will greatly increase the speed of underwater vehi...
Claims
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IPC IPC(8): G01M10/00
Inventor 张晓萍施红辉周浩磊周素云
Owner ZHEJIANG SCI-TECH UNIV