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Keywords: spacer grid
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Proceedings Papers

Proc. ASME. ICONE29, Volume 8: Computational Fluid Dynamics (CFD) and Applications, V008T08A017, August 8–12, 2022
Paper No: ICONE29-91637
..., and the full length of a PWR fuel assembly with multiple 5 × 5 spacers grid experimental data. The results agree well with the experimental results, which indicate the promising application of the present method for modeling the boiling flow under high pressure. Based on the validated method, the three...
Proceedings Papers

Proc. ASME. ICONE29, Volume 8: Computational Fluid Dynamics (CFD) and Applications, V008T08A019, August 8–12, 2022
Paper No: ICONE29-91658
... of a systematic and reliable high-precision numerical method for simulating the flow and heat transfer performance in the fuel rod bundle. computational fluid dynamics (CFD) spacer grid particle image velocimetry (PIV) turbulence model Proceedings of the 2022 29th International Conference on Nuclear...
Proceedings Papers

Proc. ASME. ICONE29, Volume 8: Computational Fluid Dynamics (CFD) and Applications, V008T08A052, August 8–12, 2022
Paper No: ICONE29-92891
... of the spacer grid aggravates the disturbance of the flow field, so that a larger pressure difference between the two rod bundles causes a larger vibration, and also affects the position where the larger vibration displacement occurs. nuclear reactor spacer grid fluid-structure interaction numerical...
Proceedings Papers

Proc. ASME. ICONE29, Volume 7A: Thermal-Hydraulics and Safety Analysis, V07AT07A044, August 8–12, 2022
Paper No: ICONE29-91561
... characteristics of the grid and cladding samples are constantly changing, it has a good reference significance for the existing fretting wear research between the grid and the cladding tube and the related nuclear fuel structure. PWR primary circuit spacer grid cladding tube fretting wear wear time...
Proceedings Papers

Proc. ASME. ICONE29, Volume 7B: Thermal-Hydraulics and Safety Analysis, V07BT07A002, August 8–12, 2022
Paper No: ICONE29-92346
... Abstract The tight lattice fuel assemblies (P/D < 1.1) have huge application potential in the new generation of the nuclear reactor systems, which possesses the advantage of higher power density and higher fuel conversion ratios, etc. Spacer grids can fix the fuel rod position and enhance...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T13A006, August 4–5, 2020
Paper No: ICONE2020-16108
... and turbulent eddies, a new interfacial area transport model has been proposed. Two important impacts on bubble interaction have been taken into account in the new model: the effects of spacer grids with mixing vanes and the impacts of geometry structure. The spacer grids breakup large bubbles into small...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T05A004, August 4–5, 2020
Paper No: ICONE2020-16121
...THE EXPERIMENTAL RESEARCH ON THE MECHANICAL CHARACTERISTICS OF THE NEWLY DESIGNED FUEL ROD SUPPORTING STRUCTURE OF SPACER GRID Quan-yao Ren, Zeng-ping Pu, Mei-yin Zheng1,Jie Chen, Mian Qin, Yuan-Ji Han, Yuan Peng, Ping Chen Science and Technology on Reactor System Design Technology Laboratory...
Proceedings Papers

Proc. ASME. ICONE17, Volume 2: Structural Integrity; Safety and Security; Advanced Applications of Nuclear Technology; Balance of Plant for Nuclear Applications, 1-9, July 12–16, 2009
Paper No: ICONE17-75008
... 25 02 2010 A spacer grid is one of the most important structural components in a LWR fuel assembly. The spacer grid, which supports nuclear fuel rods laterally and vertically with a friction grip, is an interconnected array of slotted grid straps welded at the intersections to form...
Proceedings Papers

Proc. ASME. ICONE16, Volume 1: Plant Operations, Maintenance, Installations and Life Cycle; Component Reliability and Materials Issues; Advanced Applications of Nuclear Technology; Codes, Standards, Licensing and Regulatory Issues, 731-736, May 11–15, 2008
Paper No: ICONE16-48957
... 09 07 2009 The most important function of grid springs in a spacer grid is to position the fuel rods appropriately using a friction force and to prohibit the fuel rods from dropping during a normal reactor operation. While the fuel burn-up increases, spring force of grid springs...
Proceedings Papers

Proc. ASME. ICONE16, Volume 4: Structural Integrity; Next Generation Systems; Safety and Security; Low Level Waste Management and Decommissioning; Near Term Deployment: Plant Designs, Licensing, Construction, Workforce and Public Acceptance, 39-43, May 11–15, 2008
Paper No: ICONE16-48144
... 09 07 2009 A spacer grid is one of the most important structural components in a PWR fuel assembly. The spacer grid, which supports nuclear fuel rods laterally and vertically with a friction grip, is an interconnected array of slotted grid straps welded at the intersections to form...
Proceedings Papers

Proc. ASME. ICONE14, Volume 4: Computational Fluid Dynamics, Neutronics Methods and Coupled Codes; Student Paper Competition, 255-264, July 17–20, 2006
Paper No: ICONE14-89497
... are presented in this paper. CFD VVER-440 spacer grid fuel assembly Proceedings of ICONE 14 International Conference on Nuclear Engineering Keywords: 1. INTR The po being pla knowledge important evolution computer hydraulic p become a complex f Institute of Technolog ANSYS C volume me momentum 240...