• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Heat Transfer Engineering >Reconstructing the Phase Distribution Within an Annular Channel by Electrical Resistance Tomography
【24h】

Reconstructing the Phase Distribution Within an Annular Channel by Electrical Resistance Tomography

机译：通过电阻层析成像重建环形通道内的相位分布

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

Phase distribution within an annular channel is desired to know in cooling systems. Electrical resistance tomography (ERT) is a promising technique to achieve this task in a noninvasive and visualized manner. However, high nonlinearity and ill condition of ERT restrict its spatial resolution. The internal structure that forms the annular channel with the pipe wall makes the image reconstruction of phase distribution different from the circular cross section that ERT usually applied to. In this paper, a hybrid solver coupling the finite-element method and boundary-element method is proposed to solve the forward problem more efficiently. This algorithm is based on an elaborately designed finite-element forward solution, which speeds up the image reconstruction by eliminating the unknowns inside the known internal structure using boundary element method. The Levenberg-Marquardt (L-M) method is used to achieve a fast convergence and a high numerical accuracy and then to reconstruct the phase distribution within the annular channel. The linear and nonlinear forms of the L-M methods are compared in the cases of changing the internal structure conductivity, in order to understand the influence of the internal structure.
机译：在冷却系统中希望知道环形通道内的相分布。电阻层析成像（ERT）是一种以无创和可视化方式完成此任务的有前途的技术。但是，ERT的高度非线性和不良条件限制了其空间分辨率。与管壁形成环形通道的内部结构使相位分布的图像重建与ERT通常应用于的圆形横截面不同。本文提出了一种结合有限元法和边界元法的混合求解器，以更有效地解决正向问题。该算法基于精心设计的有限元正解，可通过使用边界元方法消除已知内部结构内部的未知数来加快图像重建速度。 Levenberg-Marquardt（L-M）方法用于实现快速收敛和高数值精度，然后重建环形通道内的相位分布。在了解内部结构电导率的情况下，比较了L-M方法的线性和非线性形式，以了解内部结构的影响。

著录项

  • 来源
    《Heat Transfer Engineering》 |2015年第11期|1053-1064|共12页
  • 作者

    CHAO TAN; SHANG-JIE REN; FENG DONG;

  • 作者单位

    Tianjin Key Laboratory of Process Measurement and Control, School of Electrical Engineering and Automation, Tianjin University, Tianjin, China;

    Tianjin Key Laboratory of Process Measurement and Control, School of Electrical Engineering and Automation, Tianjin University, Tianjin, China,School of Electrical Engineering and Automation, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin, China, 300072;

    Tianjin Key Laboratory of Process Measurement and Control, School of Electrical Engineering and Automation, Tianjin University, Tianjin, China;

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

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