CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle
Nuclear fuel bundles include spacers essentially for mechanical stability and to influence the flow dynamics and heat transfer phenomena along the fuel rods. This work presents the analysis of the turbulence effects of a split-type and swirl-type spacer-grid geometries on single phase in a PWR (pres...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2014/635651 |
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| author | C. Peña-Monferrer J. L. Muñoz-Cobo S. Chiva |
| author_facet | C. Peña-Monferrer J. L. Muñoz-Cobo S. Chiva |
| author_sort | C. Peña-Monferrer |
| collection | DOAJ |
| description | Nuclear fuel bundles include spacers essentially for mechanical stability and to influence
the flow dynamics and heat transfer phenomena along the fuel rods. This work presents the analysis of the turbulence effects of a split-type and swirl-type spacer-grid geometries on single phase in a PWR (pressurized water reactor) rod bundle. Various computational fluid dynamics (CFD) calculations have been performed and the results validated with the experiments of the OECD/NEA-KAERI rod bundle CFD blind benchmark exercise on turbulent mixing in a rod bundle with spacers at the MATiS-H facility. Simulation of turbulent phenomena downstream of the spacer-grid presents high complexity issues; a wide range of length scales are present in the domain increasing the difficulty of defining in detail the transient nature of turbulent flow with ordinary turbulence models. This paper contains a complete description of the procedure to obtain a validated CFD model for the simulation of the spacer-grids. Calculations were performed with the commercial code ANSYS CFX using large eddy simulation (LES) turbulence model and the CFD modeling procedure validated by comparison with measurements to determine their suitability in the prediction of the turbulence phenomena. |
| format | Article |
| id | doaj-art-cde12ce0d91b4d3e94ba4e3adc09fb0f |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-cde12ce0d91b4d3e94ba4e3adc09fb0f2025-02-03T01:30:17ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832014-01-01201410.1155/2014/635651635651CFD Turbulence Study of PWR Spacer-Grids in a Rod BundleC. Peña-Monferrer0J. L. Muñoz-Cobo1S. Chiva2Institute for Energy Engineering, Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, SpainInstitute for Energy Engineering, Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, SpainDepartment of Mechanical Engineering and Construction, Universitat Jaume I, Avenida Sos Baynat, s/n, 12071 Castellón de la Plana, SpainNuclear fuel bundles include spacers essentially for mechanical stability and to influence the flow dynamics and heat transfer phenomena along the fuel rods. This work presents the analysis of the turbulence effects of a split-type and swirl-type spacer-grid geometries on single phase in a PWR (pressurized water reactor) rod bundle. Various computational fluid dynamics (CFD) calculations have been performed and the results validated with the experiments of the OECD/NEA-KAERI rod bundle CFD blind benchmark exercise on turbulent mixing in a rod bundle with spacers at the MATiS-H facility. Simulation of turbulent phenomena downstream of the spacer-grid presents high complexity issues; a wide range of length scales are present in the domain increasing the difficulty of defining in detail the transient nature of turbulent flow with ordinary turbulence models. This paper contains a complete description of the procedure to obtain a validated CFD model for the simulation of the spacer-grids. Calculations were performed with the commercial code ANSYS CFX using large eddy simulation (LES) turbulence model and the CFD modeling procedure validated by comparison with measurements to determine their suitability in the prediction of the turbulence phenomena.http://dx.doi.org/10.1155/2014/635651 |
| spellingShingle | C. Peña-Monferrer J. L. Muñoz-Cobo S. Chiva CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle Science and Technology of Nuclear Installations |
| title | CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle |
| title_full | CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle |
| title_fullStr | CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle |
| title_full_unstemmed | CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle |
| title_short | CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle |
| title_sort | cfd turbulence study of pwr spacer grids in a rod bundle |
| url | http://dx.doi.org/10.1155/2014/635651 |
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