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Three-dimensional flow measurement of a water flow in a sphere-packed pipe by digital holographic PTV

机译：用数字全息PTV测量球状管道中水流的三维流量

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摘要

A water cooled ceramic breeder for ITER and DEMO of a nuclear fusion reactor plays a significant role in the design of a blanket module. Pebbles of a ceramic tritium breeder are packed in a container of the blanket. Investigation of the flow behavior is necessary in an actual environment of a facility where pressure drop takes place under a complex flow such as in case of the container for the pebble bed. For the development of a facility, it is necessary to be able to monitor fluid motion of a basic flow such as a sphere-packed pipe (SPP). In the present study, to discern the complex flow structures in SPP, digital holographic PTV visualization is carried out by a refractive index-matching method using a water employed as a working fluid. The water is chosen to be able to adjust its refractive index to match to that of the MEXFLON pebble with an index of 1.33. Hologram fringe images of particles behind the spheres can be observed, and the particles' positions can be reconstructed by a digital hologram. Consequently, 3-D velocity-fields around the spheres are obtained by the reconstructed particles' positions. The velocity between pebbles is found to be convergence and divergence regions in the SPP. (C) 2015 Elsevier B.V. All rights reserved.
机译：用于核聚变反应堆ITER和DEMO的水冷陶瓷育种机在毯式组件的设计中起着重要作用。陶瓷tri饲养员的卵石被装在毯子的容器中。在卵石床用容器的情况下，在复杂的流动下发生压降的设施的实际环境中，有必要研究流动特性。对于设施的开发，必须能够监视基本流（例如球形填充管（SPP））的流体运动。在本研究中，为了辨别SPP中的复杂流动结构，数字全息PTV可视化是通过使用水作为工作流体的折射率匹配方法进行的。选择水以使其折射率能够与折射率为1.33的MEXFLON卵石相匹配。可以观察到球体后面的粒子的全息条纹图像，并且可以通过数字全息图重建粒子的位置。因此，通过重构粒子的位置可以获得球体周围的3-D速度场。发现小卵石之间的速度是SPP中的会聚和发散区域。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Fusion Engineering and Design》 |2015年第10期|1864-1867|共4页
  • 作者

    Satake Shin-ichi; Aoyagi Yusuke; Unno Noriyuki; Yuki Kazuhisa; Seki Yohji; Enoeda Mikio;

  • 作者单位

    Tokyo Univ Sci, Katsushika Ku, Tokyo 1258585, Japan;

    Tokyo Univ Sci, Katsushika Ku, Tokyo 1258585, Japan;

    Tokyo Univ Sci, Katsushika Ku, Tokyo 1258585, Japan|Japan Soc Promot Sci, Chiyoda Ku, Tokyo 1020083, Japan;

    Tokyo Univ Sci, Dept Mech Engn, Sanyo Onoda, Yamaguchi 7560884, Japan;

    Japan Atom Energy Agcy, Blanket Technol Grp, Naka, Ibaraki 3110193, Japan;

    Japan Atom Energy Agcy, Blanket Technol Grp, Naka, Ibaraki 3110193, Japan;

  • 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

    Digital hologram; Pebble; Refractive matching method;

    机译：数字全息图卵石折射匹配法;

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