Active rotary airflow field test system

A test system and rotary technology, applied in aerodynamic tests, climate sustainability, machine/structural component testing, etc., can solve the problems of consuming material, financial and manpower, high cost, and large floor space. Achieve the effect of improving experimental accuracy and low cost

Active Publication Date: 2021-10-26
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional wind tunnels are expensive to build, occupy a large area, and consume power in megawatts. Operation and maintenance are difficult and consume a lot of material, financial and manpower
At the same time, for the complex environmental conditions of equipment in actual operation, s...

Method used

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  • Active rotary airflow field test system
  • Active rotary airflow field test system
  • Active rotary airflow field test system

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0043] see figure 1 , The first specific embodiment of the present invention provides an active rotating airflow field test system, the system mainly includes a flow-equalizing duct 2 and a rotating mechanism. The current equalizing acceleration duct 2 is used to place the test product and provide a test environment for the test product; the rotating mechanism is used to control the current equalizing acceleration duct 2 around the central axis L0 (ie figure 1 The central axis of the rotating main shaft 8 in the center) rotates to make the current uniform acceleration duct 2 and the test product inside move at high speed through the method of circular drive, forming a relative test speed.

[0044] Specifically, see Figure 1 to Figure 4 , The flow equalizing acceleration duct 2 includes a constriction section 21 , a test section 22 and a diffusion section 23 connected in sequence. in:

[0045] The cross-sectional area of ​​the constriction section 21 decreases gradually alo...

no. 2 Embodiment

[0068] See Figure 9 , the second specific embodiment of the present invention provides an active rotary airflow field test system, which differs from the above-mentioned first specific embodiment only in that the first circular guide rail 41 and the second circular guide rail 42 are respectively provided with a second Two sliding tables 32, each second sliding table 32 is respectively provided with a dynamic balancing device 5.

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Abstract

The invention relates to the technical field of experimental fluid mechanics and aerodynamics and discloses an active rotation type airflow field test system. The system comprises a flow equalizing acceleration duct and a rotation mechanism, in the flow equalizing acceleration duct, the cross section area of a contraction section is gradually reduced along the air inlet direction; the test section is of a cylindrical ventilation structure and is used for placing a test object; the sectional area of the diffusion section is gradually increased in the air inlet direction; the contraction section, the test section and the diffusion section are symmetrical structures taking the first reference surface as a symmetrical central surface; in the contraction section, a distance from the midpoint of the air inlet inner side edge to the second reference surface is the maximum value a of the distance from any point in the air inlet inner side edge to the second reference surface, a distance from the midpoint of the air inlet outer side edge to the second reference surface is the maximum value b of the distance from any point in the air inlet outer side edge to the second reference surface, and b is smaller than a. In the active rotary airflow field test system, the flow field homogeneity in the test section is ensured through the flow-equalizing acceleration duct (and the asymmetric honeycomb device) with a specific structure.

Description

technical field [0001] The invention relates to the technical field of experimental fluid mechanics and aerodynamics, in particular to an active rotating airflow field test system. Background technique [0002] The high-speed movement of various devices in complex environments such as low temperature, low pressure, ice, heavy fog, and dust is a very common working condition, such as various high-pressure equipment on the roof of high-speed rail, aircraft wings and air inlet components, wind power Generator blades and more. At the same time, the aerodynamic performance and environmental adaptability testing of high-speed motion devices are directly related to the finalized design of related devices and equipment and the safe and stable operation status after they are put into production. [0003] In the current design, operation and maintenance, the only way to test the performance of the device in high-speed airflow is the wind tunnel test. However, traditional wind tunnel...

Claims

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Application Information

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IPC IPC(8): G01M9/00
CPCG01M9/00Y02B10/30
Inventor 蒋兴良黄亚飞张志劲胡琴胡建林
Owner CHONGQING UNIV
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