...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Energy Resources Technology >A Mechanistic Model of Predicting Solid Particle Erosion on the Symmetry Plane of Elbows for Annular Flow
【24h】

A Mechanistic Model of Predicting Solid Particle Erosion on the Symmetry Plane of Elbows for Annular Flow

机译：环形流动弯头对称面上预测固体颗粒冲蚀的力学模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the transportation process of oil and gas, solid particle erosion in pipelines is an inevitable problem. The erosion usually occurs in fittings with changing flow directions, such as elbows. A theoretical model based on mechanism analyses is developed for predicting the solid particle erosion on the symmetry plane of elbows for annular flow. This model is a sort of generalized erosion prediction procedure, which resolves the erosion process into the description of the flow field velocity profile, particle motion rules, and penetration calculation. The 1/7th power law is adopted to represent the velocity profile of gas core, and a linear velocity profile is assigned to the liquid film. The trajectories of particles in the gas core and the liquid film are discretized, and a mathematical model is developed by analyzing external forces acting on particles. The impact speeds and angles of particles can be obtained from the mathematical model, and the penetration ratios are then estimated by incorporating the impingement information of particles into the erosion formulas. By contrast with experimental data, the mechanistic model is validated and indicates advantages in both accuracy and efficiency. Furthermore, the effects of different parameters on penetration ratios are discussed in detail, including the superficial gas velocity, superficial liquid velocity, pipe diameter, particle diameter, curvature radius, and liquid viscosity.
机译：在油气运输过程中，管道中固体颗粒的侵蚀是不可避免的问题。腐蚀通常发生在流动方向变化的配件中，例如肘部。建立了基于机理分析的理论模型，用于预测环形流动弯头对称面上的固体颗粒侵蚀。该模型是一种广义的腐蚀预测程序，它将腐蚀过程分解为流场速度分布，粒子运动规则和渗透计算的描述。采用1/7次幂定律表示气芯的速度曲线，并将线性速度曲线分配给液膜。离散了气芯和液膜中颗粒的轨迹，并通过分析作用在颗粒上的外力建立了数学模型。可以从数学模型中获得粒子的撞击速度和角度，然后通过将粒子的撞击信息合并到腐蚀公式中来估算渗透率。通过与实验数据的对比，该机理模型得到了验证，并显示了准确性和效率方面的优势。此外，还详细讨论了不同参数对渗透率的影响，包括表观气体速度，表观液体速度，管径，粒径，曲率半径和液体粘度。

著录项

  • 来源
    《Journal of Energy Resources Technology》 |2019年第3期|032907.1-032907.12|共12页
  • 作者

    Kang Rong; Liu Haixiao;

  • 作者单位

    Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China|Shanghai Jiao Tong Univ, Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    solid particle erosion; annular flow; elbow; impact wear; wear modeling;

    机译：固体颗粒侵蚀;环流;弯头;冲击磨损;磨损建模;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号