Vortex-induced vibration simulation test device for deep sea riser model with movable top end under uniform flow

A deep-sea riser and vortex-induced vibration technology, applied in the field of marine engineering, can solve the problems of less test data, difficult to avoid scale effects, difficult vortex-induced vibration tests, etc., to achieve the effect of convenient installation and disassembly, and avoid scale effects

CN102410918BActive Publication Date: 2013-07-17SHANGHAI JIAOTONG UNIV
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-07-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a vortex-induced vibration rotary test device for an oblique riser with movable top under shear flow. The test device comprises a deep sea riser module, a top support module, a bottom support module, two vertical track modules, a horizontal track module, four motor modules, four fairing modules and a measurement analysis control module, wherein the two vertical track modules are connected with the bottom of the horizontal track module, the top support module and the bottom support module respectively; the horizontal track module is connected with the tops of the two vertical track modules; the two ends of the deep sea riser module are connected with the top support module and the bottom support module respectively; and the measurement analysis control module is connected with the deep sea riser module, the top support module and the bottom support module. According to the test device, vortex-induced vibration of a large-sized riser model under the influence of asea platform can be simulated by fully utilizing the vertical track modules and the horizontal track module; and the test device is very convenient to install and detach.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a device in the technical field of ocean engineering, in particular to a vortex-induced vibration simulation test device for a deep-sea riser model with a movable top evenly flowing down. 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 i...

Examples

Embodiment 1

[0038] In this embodiment, the vortex-induced vibration and rotation test device with a movable top under shear flow provided by the present invention includes a deep-sea riser module 1, a top support module 2, a bottom support module 3, two Vertical track module 4 , horizontal track module 5 , four motor modules 6 , four fairing modules 7 , and a measurement analysis control module 9 . Wherein, the two vertical track modules 4 are respectively connected with the bottom of the horizontal track module 5, the top support module 2, and the bottom support module 3, and the horizontal track module 5 is connected with the bottom of the other side of the trailer 10 and the two sides respectively. The tops of the four vertical track modules 4 are connected, the two ends of the deep-sea riser module 1 are respectively connected with the top support module 2 and the bottom support module 3, and the fairing sides of the four fairing modules 7 are connected to each other. The plates 39 re...