AN ANALYSIS OF CARCASS LAYER EROSION IN UN-BONDED FLEXIBLE OFFSHORE PIPEWORK

C An; C W Gu; H Qin; T T Li; M L Duan

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AN ANALYSIS OF CARCASS LAYER EROSION IN UN-BONDED FLEXIBLE OFFSHORE PIPEWORK

机译：未粘结柔性海上管道中胴体层腐蚀的分析

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In this paper, a simplified model for erosion in un-bonded flexible pipes caused by the sand entrained in the produced fluid is established. Flow field analysis is performed based on the governing equations of the continuous fluid and the discrete particles. A two-way coupled Eulerian-Lagrangian approach is employed to solve the gas-solid flow in the pipe bend. To eliminate the influence of the length of the straight pipe section on the stability of the flow field in the pipe, the flow field distribution under different lengths is analyzed to determine the optimal straight pipe length. Six commonly used erosion models are adopted to predict the erosion rate. After comparing the prediction results with experimental data, the most accurate Oka model is selected to calculate the effect of the fluid and structure parameters on erosion. Effects of particle parameters and pipe structural parameters on the erosion rate of curved flexible pipes are numerically fitted, and the quantitative description is given.

机译：在本文中，建立了由所夹带的流体中夹带的砂的未粘结柔性管中的腐蚀的简化模型。基于连续流体和离散颗粒的控制方程来执行流场分析。采用双向耦合的Eulerian-拉格朗日方法来解决管弯的气固流动。为了消除直管部分长度对管道流场的稳定性的影响，分析了不同长度下的流场分布以确定最佳的直管长度。采用六种常用的侵蚀模型来预测侵蚀率。将预测结果与实验数据进行比较后，选择最精确的OKA模型来计算流体和结构参数对侵蚀的影响。粒子参数和管结构参数对弯曲柔性管的腐蚀速率的影响是数值装配的，并且给出了定量描述。

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《The Transactions of the Royal Institution of Naval Architects,Part A:International journal of maritime engineering》 |2021年第1期|63-77|共15页
作者
C An; C W Gu; H Qin; T T Li; M L Duan;
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College of Safety and Ocean Engineering China University of Petroleum-Beijing China;

College of Safety and Ocean Engineering China University of Petroleum-Beijing China;

College of Safety and Ocean Engineering China University of Petroleum-Beijing China;

National Science Library Chinese Academy of Sciences China;

College of Safety and Ocean Engineering China University of Petroleum-Beijing China;

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AN ANALYSIS OF CARCASS LAYER EROSION IN UN-BONDED FLEXIBLE OFFSHORE PIPEWORK

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