Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Druckformat: 1065-3090
ISSN Online: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v3.i4.20
pages 253-263

RECONSTRUCTION OF THREE-DIMENSIONAL DENSITY DISTRIBUTION FROM THE LIMITED PROJECTION IMAGES WITH GENETIC ALGORITHM

Koji Okamoto
Graduate School of Frontier Science, Nuclear Engineering Research Laboratory, The University of Tokyo, Japan
D. Tsuru
Nuclear Engineering Research Laboratory, University of Tokyo, Tokai-mura, Ibaraki, Japan
Motoo Fumizawa
Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki, Japan

ABSTRAKT

Measurement of three-dimensional density distributions in a transient unstable stratified flow is important for the safety analysis on the advanced-type nuclear power plant. Three-dimensional density distribution can be reconstructed using computer tomography techniques from interferogram images. However, in the transient experiment, only two or four interferogram images from different angles can be taken. Conventional tomography techniques have a low accuracy with few interferogram images, because the information of the projection is not enough for the reconstruction. In this study, a new three-dimensional reconstruction technique was proposed. In this technique, the genetic algorithm was introduced to reconstruct the whole field from a few interferogram images.