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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Imprimir: 1065-3090
ISSN On-line: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.2019030835
pages 301-319

DEVELOPMENT OF TIME-AVERAGED X-RAY CT SYSTEM FOR MEASURING GAS-LIQUID TWO-PHASE PIPING FLOW

Jun Nukaga
Hitachi, Ltd. Research & Development Group 1-1, Ohmika-cho, 7-chome, Hitachi-shi, Ibaraki-ken 319-1292, Japan
Kenichi Yasuda
Hitachi-GE Nuclear Energy, Ltd. Hitachi Works, 1-1, Saiwai-cho, 1-chome, Hitachi-shi, Ibaraki-ken 317-0073, Japan
Toru Aoki
Shizuoka University, Research Institute of Electronics, 3-5-1, Jouhoku, 3-chome, Naka-ku, Hamamatsu-shi, Shizuoka-ken 432-8011, Japan

RESUMO

We have developed a noncontact, nondestructive void fraction measurement system on the basis of three-dimensional X-ray CT with the aim of fully understanding the behavior of high-velocity, high-pressure gas-liquid two-phase flow in piping. To measure the void fraction in the flow at high velocity, the time-averaged CT image acquisition by a multiple averaging method was proposed. It was confirmed that the time-averaged CT image was obtained by the captured image of a sample rotating at a high speed in this system. Furthermore, we measured the void fraction in high-velocity, high-pressure piping and confirmed that the proposed method performed as expected even under actual conditions from a comparison result obtained with a differential pressure gauge.

Palavras-chave: X-ray, time-averaged, CT, two-phase

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