A CFD analysis of blockage length on a partially blocked fuel rod
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2019
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| _version_ | 1876428071022624768 |
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| author | N.L. Scuro |
| author_facet | N.L. Scuro |
| contents | A CFD analysis of blockage length on a partially blocked fuel rod N.L. Scuro P.E. Umbehaun E. Angelo G. Angelo D. A. Andrade Biología CFD fuel rod ANSYS CFX Partially blocked After a loss of coolant accident (LOCA), fuel rods may balloon. The swelling can partially block the flow channel, affecting the coolability during reflood phase. In order to analyze the influence of blockage length, using a radial blockage of 90%, varying just the blockage length, many steady state numerical simulations has been done using Ansys-CFX code to verify thermal-hydraulic properties according to different forced cooled conditions. Temperature peaks are observed on cladding, followed by a temperature drop. A 5x5 fuel assembly, with 9 centered ballooned fuel rod, flow redistribution inside channels can also be captured, indicating an overheating zone. Therefore, this study conclude, for the same boundary conditions, the longer the blockage length originated after LOCA events, the higher are the clad temperatures, indicating the possibility of overheat during transient conditions on reflood. 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280898011 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2B Vol.7 |
| format | Artículo científico |
| id | redalyc_722280898011 |
| institution | Redalyc |
| language | en |
| publishDate | 2019 |
| publisher | Sociedade Brasileira de Proteção Radiológica - SBPR |
| spellingShingle | A CFD analysis of blockage length on a partially blocked fuel rod N.L. Scuro Biología CFD fuel rod ANSYS CFX Partially blocked A CFD analysis of blockage length on a partially blocked fuel rod N.L. Scuro P.E. Umbehaun E. Angelo G. Angelo D. A. Andrade Biología CFD fuel rod ANSYS CFX Partially blocked After a loss of coolant accident (LOCA), fuel rods may balloon. The swelling can partially block the flow channel, affecting the coolability during reflood phase. In order to analyze the influence of blockage length, using a radial blockage of 90%, varying just the blockage length, many steady state numerical simulations has been done using Ansys-CFX code to verify thermal-hydraulic properties according to different forced cooled conditions. Temperature peaks are observed on cladding, followed by a temperature drop. A 5x5 fuel assembly, with 9 centered ballooned fuel rod, flow redistribution inside channels can also be captured, indicating an overheating zone. Therefore, this study conclude, for the same boundary conditions, the longer the blockage length originated after LOCA events, the higher are the clad temperatures, indicating the possibility of overheat during transient conditions on reflood. 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280898011 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2B Vol.7 |
| title | A CFD analysis of blockage length on a partially blocked fuel rod |
| topic | Biología CFD fuel rod ANSYS CFX Partially blocked |
| url | https://www.redalyc.org/articulo.oa?id=722280898011 |