A dynamic response device for measuring slender standpipe with uniform out-of-plane flow

Abstract

The invention discloses a dynamic response device for measuring slender standpipes under uniform out-of-plane flow. The invention can realize the vortex-induced vibration test of standpipes under the action of 90-degree uniform flow; The safety factor of large-scale key installations; the depth of deep water tanks in marine engineering can be fully used to simulate the real Reynolds number vortex induced vibration of large pipe fittings; the width of deep water tanks in marine engineering can be fully used to arrange real-time monitoring equipment around large pipe fittings, and the model can be adjusted according to different needs The shape can be adjusted; the modular design is adopted, which has the advantage of being easy to install, easy to upgrade and change, and to meet different functional requirements.

Description

technical field [0001] The invention belongs to the field of marine engineering, and in particular relates to an experimental device for measuring the dynamic response of a slender standpipe under an out-of-plane uniform flow and simultaneously monitoring vortex-induced vibration (VIV). Background technique [0002] Under the action of wind, wave and current, the marine floating structure will drive the catenary riser to make periodic reciprocating motions in the water, thereby generating a relative oscillating flow in the direction of riser movement, and this oscillating flow will encourage the standpipe to hang "Intermittent" vortex-induced vibration occurs in the section. In recent years, with the development of deep-sea petroleum systems, catenary risers have been widely used in engineering. The riser in the deep water environment can be regarded as a slender and flexible structure. At this time, the theory of small deformation is no longer applicable, which makes the p...

AI Technical Summary

Problems solved by technology

Analyzing this test technology, it is found that its shortcomings are: 1. Considering the depth of the towing pool, it is generally only possible to simulate the vortex-induced vibration of small-scale pipe fittings, and it is difficult to effectively test the vortex-induced vibration at the real Reynolds number. 2. It is not easy The underwater monitoring equipment around the standpipe is arranged, and the shape of the standpipe cannot be adjusted during the slow-wave riser model test. 3. The forced oscillation experiment at a certain flow rate cannot be carried out. 4. The process of installing the standpipe in the experiment is more complicated. 5. Cannot effectively simulate the movement of ocean platforms

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