Vortex-induced vibration testing system suitable for multi-oscillator coupled vibration research

Abstract

The invention discloses a vortex-induced vibration testing system suitable for multi-oscillator coupled vibration research, and relates to the field of fluid mechanics and experimental facilities. The vortex-induced vibration testing system is formed by three parts of a fixed supporting module, a slidable supporting module and a sliding system; the slidable support module can freely slide on the fixed supporting module, and meanwhile the sliding system can do vertical linear reciprocating motion on the slidable supporting module through a tension spring. The vortex-induced vibration testing system is not only suitable for a single-oscillator vortex-induced vibration test, but also suitable for a two/more-oscillator vortex-induced vibration test under the condition of various arrays. Meanwhile, the system can achieve various configuration forms such as series connection, parallel connection, inclined configuration and series-parallel coupling configuration among multiple oscillators, expands the research range of vortex-induced vibration, and supplies good testing conditions to multi-oscillator coupled wake galloping research.

Description

technical field [0001] The invention relates to the field of fluid mechanics and experimental devices, and is a high-efficiency test system suitable for both single independent vibration and multi-vibrator coupled vibration research. Background technique [0002] At a specific flow rate, the elastically supported blunt body around the flow produces periodic vibrations due to the vortices that alternately fall off the rear side, and the periodic vibration of the blunt body will also cause the change of the mode of the wake shedding vortex at the rear side of the blunt body. This kind of fluid and solid The phenomenon of interaction is called Vortex-Induced Vibration (VIV for short). The initial research content of vortex induced vibration mainly focused on how to suppress the vibration to reduce its damage to the building structure, but with the development and deepening of the research, it was found that the vibration energy of vortex induced vibration could be utilized. Pr...

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Problems solved by technology

However, for the research on the mechanism of two vibrators (rigid cylinder with elastic support and variable solid springs), the arrangement of the vibrators is very limited, and it cannot effectively realize the arrangement of various forms (series, parallel, each class oblique arrangement)

For multi-oscillators, there is no effective mechanism research device, but only an engineering test device for marine risers (the cylinder is a flexible body, and there is no solid spring)

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