Three-dimensional flow measurement of a sphere-packed pipe by a digital hologram and refractive index-matching method
作者： S. Satake , Y. Aoyagi , T. Tsuda , N. Unno , K. Yuki
DOI: 10.1016/J.FUSENGDES.2014.01.029
关键词:
摘要: Abstract Molten-salt used as a coolant in fusion reactors plays significant role the design of advanced reactors. Investigation thermal behavior is necessary an actual environment facility where heat transfer enhancement takes place under high Pr number fluid flow such case FLiBe. For development facility, it to be able monitor motion basic promoter sphere-packed pipe (SPP). In present study, discern complex structures SPP, digital holographic PTV visualization carried out by refractive index-matching method using sodium iodide (NaI) solution employed working fluid. Hologram fringe images particles behind spheres can observed, and particles’ positions reconstructed hologram. Consequently, 3-D velocity-fields around are obtained positions. The velocity between pebbles found faster than that other regions.
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