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A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel

机译:CFD分析安装在压力容器上的直动式安全泄压阀的动力学

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摘要

In this study, a numerical model is developed to investigate the fluid and dynamic characteristics of a direct-operated safety relieve valve (SRV). The CFX code has been used to employ advanced computational fluid dynamics (CFD) techniques including moving mesh capabilities, multiple domains and valve piston motion using the CFX Expression Language (CEL). With a geometrically accurate CFD model of the SRV and the vessel, the complete transient process of the system from valve opening to valve closure is simulated. A detailed picture of the compressible fluid flowing through the SRV is obtained, including small-scale flow features in the seat regions. In addition, the flow forces on the disc and the lift are monitored and analyzed and the comparison of the effects of design parameters, are examined; including the adjusting ring position, vessel volume and spring stiffness. Results from the model allow the fluid and dynamic characteristics of the SRV to be investigated and shows that the model has great potential of assisting engineers in the preliminary design of SRVs, operating under actual conditions which are often found to be difficult to interpret in practice.
机译:在这项研究中,建立了一个数值模型来研究直动式安全释放阀(SRV)的流体和动力特性。 CFX代码已被用来采用高级计算流体动力学(CFD)技术,包括使用CFX表达式语言(CEL)的移动网格功能,多个域和阀活塞运动。利用SRV和容器的几何精确CFD模型,可以模拟系统从阀门打开到阀门关闭的完整瞬态过程。获得了流经SRV的可压缩流体的详细图片,包括阀座区域的小规模流动特征。此外,还监测和分析了作用在圆盘和升程上的流动力,并检查了设计参数的影响是否比较。包括调节环位置,容器容积和弹簧刚度。该模型的结果可以研究SRV的流体和动力特性,并表明该模型具有很大的潜力,可以帮助工程师在实际条件下操作SRV的初步设计,而实际条件通常在实践中难以解释。

著录项

  • 来源
    《Energy Conversion & Management》 |2014年第5期|407-419|共13页
  • 作者单位

    School of Electrical and Electronic Engineering, Merz Court, Newcastle University, Newcastle upon Tyne NE1 7RU, UK,Department of Mechanical Engineering, Dong-A University, Busan 604-714, South Korea;

    School of Civil Engineering and Geosciences, Cassie Building, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;

    Department of Engineering Mechanics, College of Mechanics and Materials, Hohai University, People's Republic of China;

    School of Electrical and Electronic Engineering, Merz Court, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;

    Department of Mechanical Engineering, Dong-A University, Busan 604-714, South Korea;

    Department of Mechanical and Aerospace Engineering University of Strathclyde, Glasgow G1 1XJ, UK;

  • 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

    Direct-operated safety relief valve; Pressure vessel; Blowdown; CFD; Moving mesh;

    机译:直动式安全溢流阀;压力容器;排污;差价合约移动网格;

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