Investigation of hydrodynamic parameters in a draft tube reactor using radioisotope based techniques and conventional method. (July 2015)

• Record Type: Journal Article
• Authors: Jung, S.H.; Park, J.G.; Moon, J.H.; Kim, J.B.
• Is Part Of: Applied radiation and isotopes. Volume 101(2015:Jul.)
• Page Start: 93
• Page End: 100
• Publication Date: 2015-07
• Subjects: Gamma radiation -- Radiotracer -- Radioactive particle tracking -- Three-dimension velocity vector -- CFD model validation -- Hydrodynamics of industrial process; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2015.03.022
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: In this study, various techniques were attempted to investigate flow dynamics in the enclosed reactor and the results from the techniques were compared. Radioactive particle tracking (RPT) and industrial single photon emission computed tomography (SPECT) were carried out and the circulation times from them showed a deviation of 17.5%. The circulation time of the RPT was longer than that of SPECT, and it is speculated that the physical dimension of the/ fabricated radioactive particle creates the discrepancy. Particle image velocimetry (PIV) measurements and computational fluid dynamic (CFD) simulations were conducted. The velocity patterns from them were similar to each other in the entire reactor region except near the propeller installed at the bottom of the reactor. Highlights: Radioisotope based techniques were used to investigate flow dynamics in a draft tube reactor. The circulation time measured using RPT is longer than the circulation time measured by the SPECT. Radioactive particle tracking technique is expected to be helpful to investigate flow dynamics.