A vortex-induced simulation test device for a deep-sea riser array model subjected to pretension under uniform flow

A deep-sea riser and simulation test technology, applied in the field of marine engineering, can solve the problems of small test section distance, unavoidable scale effect, difficult vortex-induced vibration test, etc., to achieve the effect of convenient installation and disassembly, and avoid scale effect.

Inactive Publication Date: 2011-12-14
SHANGHAI JIAO TONG UNIV
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  • Application Information

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Problems solved by technology

After analysis, the shortcomings of this testing technology are: 1. Generally, it can only simulate the vortex-induced vibration of small-scale pipe fittings, and the scale effect is difficult to avoid; 2. Due to the speed limit of the ocean engineering pool trailer, it is difficult to effectively carry out the real Reynolds number test. Vortex-induced vibration te

Method used

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  • A vortex-induced simulation test device for a deep-sea riser array model subjected to pretension under uniform flow
  • A vortex-induced simulation test device for a deep-sea riser array model subjected to pretension under uniform flow
  • A vortex-induced simulation test device for a deep-sea riser array model subjected to pretension under uniform flow

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Experimental program
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Embodiment 1

[0044] Such as figure 1 As shown, this embodiment includes: several deep-sea riser modules 1, a first end support module 2, a second end support module 3, a first fixed column module 4, a second fixed column module 5, and a booster module 6 , two fairing modules 7, two wave suppressor modules 8 and a measurement and analysis control module 9, wherein: the afterburner module 6 is arranged inside the second fixed column module 5 and is connected with the second end support module 3, and the second fixed Column modules 5 are respectively connected to the bottom of one side of the trailer 10 and the second end support module 3, and the first fixed column modules 4 are respectively connected to the bottom of the other side of the trailer 10 and the first end support module 2. Both ends of the tube module 1 are respectively connected to the second end support module 3 and the first end support module 2, and the fairing side plates 50 of the two fairing modules 7 are respectively fix...

Embodiment 2

[0066] Such as figure 2 As shown in (b), when the number of deep-sea riser modules 1 is equal to 2, two deep-sea riser modules 1 are arranged in a vertical array.

Embodiment 3

[0068] Such as figure 2 As shown in (c), when the number of deep-sea riser modules 1 is equal to 3, two deep-sea riser modules 1 are arranged in a triangular array.

[0069] Such as figure 1 As shown, the trailer 10 and the towing pool 11 are existing test facilities. The trailer 10 can realize bidirectional uniform linear motion at different speeds. The towing pool 11 is equipped with water of a certain depth to provide a water environment for the seabed riser model. The relative movement of the two can simulate the uniform flow of different flow velocities.

[0070] The device can be installed with a large-scale deep-sea riser model 14, thereby avoiding the scale effect, and can make full use of the high speed of the trailer 10 to simulate the real Reynolds number vortex-induced vibration of the large-scale deep-sea riser model 14, and can make full use of the length of the towed pool 11. Long-distance testing results in longer and more stable test data. The device can s...

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Abstract

A deep-sea riser array model vortex-induced simulation test device under uniform flow under pretension in the field of ocean engineering technology, including: several deep-sea riser modules, a first end support module, a second end support module, a first The fixed column module, the second fixed column module, the afterburner module, two fairing modules, two wave suppressing plate modules and the measurement analysis control module, the present invention utilizes the relative movement of the trailer and the towed pool to simulate the uniform incoming flow of different flow rates, and Pretension can be applied to both ends of the deep-sea riser array model, so as to simulate the vortex-induced vibration of the deep-sea riser array in the laboratory environment. Riser model.

Description

technical field [0001] The invention relates to a device in the technical field of marine engineering, in particular to a vortex-induced simulation test device for a deep-sea riser array model under uniform flow and pretension. Background technique [0002] According to the knowledge of fluid mechanics, when a columnar structure is placed in a certain speed of incoming flow, alternate vortices will occur on both sides of it. Associated with the creation and discharge of vortices, the column is subjected to lateral and flow-wise pulsating pressures. If the column is elastically supported at this point, the pulsating fluid forces will induce vibrations in the column, which in turn will change the structure of its wake. This fluid-structure interaction problem is called vortex-induced vibration. Deep-sea risers often appear in the form of arrays. Since each riser is close to each other, there will be hydrodynamic interference between each other, resulting in more complex vort...

Claims

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Application Information

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IPC IPC(8): G01M7/02G01M10/00
Inventor 付世晓陈蓥杨建民汪学峰彭涛
Owner SHANGHAI JIAO TONG UNIV
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