Vortex-induced vibration simulation test device for pre-tensioned deep-sea riser model under even flow

A deep-sea riser and vortex-induced vibration technology, which is applied in the field of ocean engineering, can solve the problems of unavoidable scale effect, less test data, and small test section distance, and achieve the effect of avoiding scale effect and convenient installation and disassembly

CN102323025BInactive Publication Date: 2013-08-21SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-08-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a vortex-induced vibration simulation test device for a pre-tensioned deep-sea riser model under even flows in the technical field of oceanographic engineering. The vortex-induced vibration simulation test device comprises a deep-sea riser module, a first end part supporting module, a second end part supporting module, a first fixed column module, a second fixed column module, a force application module, two cowling modules, two wave suppression plate modules and a measurement, analysis and control module. By using a trailer and a towing basin which move relatively tosimulate even incoming flows with different flow rates, pretension can be applied to the two ends of the deep-sea riser model and therefore the simulation of deep-sea riser vortex-induced vibration under a laboratory environment is realized. The vortex-induced vibration simulation test device has the advantages that the testing time is long and the deep-sea riser model which is transversely arranged in the towing basin at high flow rate can be tested.
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Description

technical field

[0001] The invention relates to a device in the technical field of marine engineering, in particular to a vortex-induced vibration simulation test device for a deep-sea riser 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. As offshore oil and gas exploitation advances to deep water, the riser in deep water can be regarded as a slender and flexible structure, and the theory of small deformation is no...

Examples

Embodiment 1

[0043] Such as figure 1 and figure 2 As shown, this embodiment includes: a deep sea riser module 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, a force module 6, two A fairing module 7, two wave suppression module 8 and measurement and analysis control module 9, wherein: the afterburner module 6 is arranged inside the second fixed column module 5 and connected with the second end support module 3, the second fixed column module 5 are respectively connected to the bottom of one side of the trailer 10 and the second end support module 3, the first fixed column module 4 is respectively connected to the bottom of the other side of the trailer 10 and the first end support module 2, and the two deep-sea riser modules 1 The ends are respectively connected with 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 ...