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Test device for assessing drag reduction effect of bionic jet flow surface revolution body wall surface and test method

A test device, the technology of spinning a body, which is applied in the direction of fluid dynamics test, measuring device, and testing of machine/structural components, etc., can solve problems such as poor flow rate control, and achieve easy operation, accurate test results, and simple test principles. Effect

Inactive Publication Date: 2014-02-19
HARBIN ENG UNIV
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  • Abstract
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Problems solved by technology

[0003] At present, there are few test devices for evaluating the drag reduction effect of bionic jet surfaces, and most of them focus on the rotating jet test method. " and the patent application number is: 201120070969.8, the name is "a test device for friction resistance test", which provides power for the main field velocity through the rotation of the cylinder, and the flow rate is not easy to control

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  • Test device for assessing drag reduction effect of bionic jet flow surface revolution body wall surface and test method
  • Test device for assessing drag reduction effect of bionic jet flow surface revolution body wall surface and test method
  • Test device for assessing drag reduction effect of bionic jet flow surface revolution body wall surface and test method

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Embodiment Construction

[0018] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0019] combine Figure 1~2 , the test device of the present invention consists of a stepper motor, a servo hybrid stepper motor driver, an elastic diaphragm coupling, a screw nut mechanism, a pool 1, a test screw body wall model 2, a connecting rod 4, a slider 5, a jet soft Pipe 6, pump 7, flow meter 10, overflow valve 8 and necessary pipeline connections. The servo hybrid stepper motor driver is connected to the stepper motor, the stepper motor is connected to the elastic diaphragm coupling and the lead screw nut mechanism, and the nut is fixedly connected to the slider 5 to provide power for testing the movement of the wall surface model 2 of the rotary body The overflow valve 8, the pump 7 and the pool 1 form a closed loop, the overflow valve 8 is used to regulate the outlet pressure of the pump 7, and the speed of the jet inlet is adjusted by adjusting the op...

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Abstract

The invention aims to provide a test device for assessing the drag reduction effect of a bionic jet flow surface revolution body wall surface and a test method. The test device comprises a pool, a slide block, a stepping motor and a pump. The stepping motor is connected with the slide block and drives the slide block to move, the slide block is connected with a revolution body wall surface model through a connection rod, the revolution body wall surface model is arranged in the pool, a jet flow pipeline is arranged in the revolution body wall surface model, and the revolution body wall surface model is provided with a jet flow hole and a jet flow hose. The jet flow hole and the jet flow hose are respectively communicated with the jet flow pipeline, the jet flow hose is connected with the pump through the jet flow pipeline, the jet flow pipeline is provided with a valve and a flow meter, and the pump is communicated with the pool. The revolution body wall surface model comprises a smooth surface revolution body wall surface model and a bionic jet flow surface revolution body wall surface model. The test device can test the drag reduction effect of the bionic jet flow surface revolution body wall surface, the drag reduction effect of a non-smooth surface revolution body wall surface structure and the drag reduction effect of a surface coating, and is easy to operate, and accurate in test result.

Description

technical field [0001] The invention relates to a test device and a test method, in particular to a test device and a test method for surface structure friction resistance. Background technique [0002] The main energy consumption of transportation tools when traveling in water is used to overcome the traveling resistance. Therefore, analyzing and reducing resistance is of great significance for saving energy, improving working conditions and improving work efficiency. In order to evaluate the drag reduction characteristics of the bionic jet surface, the bionic jet drag reduction technology was applied on the surface of the spiral body, and the test model of the bionic jet surface spiral body wall was processed, and the performance of the bionic jet surface was measured by comparing with the test model of the smooth surface spiral body wall. Drag reduction effect. [0003] At present, there are few test devices for evaluating the drag reduction effect of bionic jet surfaces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
Inventor 赵刚李芳刘维新刘文博李照远孙壮志
Owner HARBIN ENG UNIV
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