A PIV full flow field synchronous automatic measurement system based on a rotating test bench

A technology for synchronous automatic and measurement systems, applied in the direction of fluid velocity measurement, measurement devices, jet engine testing, etc., can solve the problems of low precision, low time resolution of flow field related information, difficult synchronization and full flow field automatic measurement , to achieve the effects of improving measurement efficiency, improving experimental measurement efficiency, improving experimental data accuracy and time resolution

Active Publication Date: 2021-08-27
BEIHANG UNIV
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Problems solved by technology

However, in the past, it was often difficult to apply PIV technology to the simultaneous automatic measurement of the full flow field in the channel under the condition of rotation. Very low, low precision

Method used

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  • A PIV full flow field synchronous automatic measurement system based on a rotating test bench
  • A PIV full flow field synchronous automatic measurement system based on a rotating test bench

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The present invention provides a kind of PIV full-flow field synchronous automatic measurement system based on the rotating test bench, comprising a computer 7, a rotating test bench 8 and a turntable 9 inst...

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Abstract

The invention discloses a PIV full flow field synchronous automatic measurement system based on a rotating test bench. The laser light emitted by the laser generator is guided to the measurement section through the reflection principle of the mirror, and the mirror and the PIV camera are fixed on the ball screw. On the premise of not shutting down the rotating experimental platform, the full flow field synchronous automatic shooting of the main flow and secondary flow of the channel measurement section can be realized. The PIV camera that shoots the mainstream is placed on the side of the channel measurement section, and the PIV camera that shoots the secondary flow is placed at the exit of the channel measurement section, both of which are kept on the same rotating arm as the measurement section, and the laser generator is placed on the middle turntable , so as to ensure synchronous measurement, that is, the time resolution is high enough, and the safety of rotation is improved. At the same time, the present invention can realize the automatic measurement of laser particle image velocity measurement in the full flow field of the channel measurement section under the condition of rotation, which greatly improves the measurement efficiency and safety. Finally, it can improve the accuracy of flow data in the whole flow field.

Description

technical field [0001] The invention relates to the technical field of rotary heat exchange experiments, in particular to a PIV full flow field synchronous automatic measurement system based on a rotary test bench. Background technique [0002] In the field of aero-engines, in order to increase the thrust-to-weight ratio of the engine, it is necessary to increase the temperature before the turbine. At present, the temperature before the turbine has reached and exceeded 2000K, and it is developing towards a higher direction, which has seriously exceeded the tolerance temperature of current materials. , in addition to the continuously increasing turbine inlet temperature, the turbine blades also bear mechanical loads caused by high-speed rotation, aerodynamic loads caused by gas impact, chemical corrosion, and thermal stress caused by uneven temperature of the blades themselves, so cooling technology is required To reduce the working temperature of the turbine blades and prolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/14G01P5/20
CPCG01M15/14G01P5/20
Inventor 陶智黄维娜施锦程李海旺郭文由儒全
Owner BEIHANG UNIV
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