The flow visualization in the complicated flow geometry of the pebble bed of the high temperature gas-cooled reactor is investigated to identify the stagnation points at which internal hot spots are expected. A particle image velocimetry method was employed to visualize flow for the pebble bed in the structure of the face centered cubic. The wind tunnel was designed to provide the same Reynolds number of as the pebble bed nuclear reactor. Scaling law determined the diameter of the pebble as 120 mm, which is two times bigger than the reference when we use air as a coolant rather than helium. The present scaled up design reduces the load of high speed imaged acquisition and the flow field measured by 4000 frames/s. It was found that the present method identified flow field successfully, including the stagnation points suspected to produce hot spots on the surface of the pebble bed. The present data are useful in evaluating the three-dimensional computational fluid dynamics analysis.
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November 2009
Technical Briefs
Flow Visualization in the Scaled Up Pebble Bed of High Temperature Gas-Cooled Reactor Using Particle Image Velocimetry Method
Jae-Young Lee,
Jae-Young Lee
School of Mechanical and Control System Engineering,
e-mail: jylee7@handong.edu
Handong Global University
, Pohang, Gyeongbuk 791-708, Korea
Search for other works by this author on:
Sa-Ya Lee
Sa-Ya Lee
School of Mechanical and Control System Engineering,
e-mail: sayalee@seed.handong.edu
Handong Global University
, Pohang, Gyeongbuk 791-708, Korea
Search for other works by this author on:
Jae-Young Lee
School of Mechanical and Control System Engineering,
Handong Global University
, Pohang, Gyeongbuk 791-708, Koreae-mail: jylee7@handong.edu
Sa-Ya Lee
School of Mechanical and Control System Engineering,
Handong Global University
, Pohang, Gyeongbuk 791-708, Koreae-mail: sayalee@seed.handong.edu
J. Eng. Gas Turbines Power. Nov 2009, 131(6): 064502 (4 pages)
Published Online: July 17, 2009
Article history
Received:
November 26, 2008
Revised:
December 1, 2008
Published:
July 17, 2009
Citation
Lee, J., and Lee, S. (July 17, 2009). "Flow Visualization in the Scaled Up Pebble Bed of High Temperature Gas-Cooled Reactor Using Particle Image Velocimetry Method." ASME. J. Eng. Gas Turbines Power. November 2009; 131(6): 064502. https://doi.org/10.1115/1.3098417
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