An experiment was performed in a wind tunnel to investigate the flow structure in a rod bundle with a hybrid vane grid. The hybrid vane is a flow-mixing device, which consists of two pairs of primary and secondary vanes in a cell. The test section is a rectangular channel (300 mm × 300 mm × 2400 mm) including 3 × 3 rod (75 mm diameter) array with a spacer grid. The pitch to diameter ratio of the rod array is 1.33. The flow structures downstream the grid are measured at Reynolds number of 1.2 × 105 for 35-degree deflecting angle of the hybrid flow-mixing vane. The data are obtained for the distributions of the time mean axial velocity, lateral velocity, and turbulent intensities in 3 component directions over a center subchannel along axial locations and compared with the previous results of split vane grid that has two vanes in a cell. The results show that the mixing efficiency of the hybrid vane grid could be similar with that of the split vane grid because swirl factor of the hybrid vane grid is higher than that of split vane grid and the magnitude of axial turbulent intensity, turbulent diffusion coefficient, and cross flow factor is similar to each other in spite of differences of the vane numbers and shape in a cell between hybrid and split vane grids.
Skip Nav Destination
10th International Conference on Nuclear Engineering
April 14–18, 2002
Arlington, Virginia, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-3597-9
PROCEEDINGS PAPER
Structure of Turbulent Flow in Subchannel of Rod Bundle Downstream of Spacer Grid With Hybrid Flow Mixing Device Available to Purchase
Dong Seok Oh,
Dong Seok Oh
Korea Atomic Energy Research Institute, Taejon, Korea
Search for other works by this author on:
Wang Kee In,
Wang Kee In
Korea Atomic Energy Research Institute, Taejon, Korea
Search for other works by this author on:
Tae Hyun Chun
Tae Hyun Chun
Korea Atomic Energy Research Institute, Taejon, Korea
Search for other works by this author on:
Dong Seok Oh
Korea Atomic Energy Research Institute, Taejon, Korea
Wang Kee In
Korea Atomic Energy Research Institute, Taejon, Korea
Tae Hyun Chun
Korea Atomic Energy Research Institute, Taejon, Korea
Paper No:
ICONE10-22264, pp. 399-411; 13 pages
Published Online:
March 4, 2009
Citation
Oh, DS, In, WK, & Chun, TH. "Structure of Turbulent Flow in Subchannel of Rod Bundle Downstream of Spacer Grid With Hybrid Flow Mixing Device." Proceedings of the 10th International Conference on Nuclear Engineering. 10th International Conference on Nuclear Engineering, Volume 3. Arlington, Virginia, USA. April 14–18, 2002. pp. 399-411. ASME. https://doi.org/10.1115/ICONE10-22264
Download citation file:
11
Views
Related Proceedings Papers
Related Articles
Experimental Investigation of the Subchannel Axial Pressure Drop and Hydraulic Characteristics of a 61-Pin Wire Wrapped Rod Bundle
J. Fluids Eng (May,2022)
Flow Regime Identification Under Adiabatic Upward Two-Phase Flow in a Vertical Rod Bundle Geometry
J. Fluids Eng (September,2011)
Impact of Orifice Length/Diameter Ratio on 90 deg Sharp-Edge Orifice Flow With Manifold Passage Cross Flow
J. Fluids Eng (August,2009)
Related Chapters
Random Turbulence Excitation in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Turbulence-Induced Vibration in Cross-Flow
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook
Vortex-Induced Vibration
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook