Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid
Axial and lateral pressure loss in a 5 × 5 rod–bundle with a split-type mixing vane spacer grid was experimentally measured using differential pressure transmitters at different sub-channel Reynolds numbers (Re) and orienting angles. The geometrical parameters of the 5 × 5–rod bundle are as follows:...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-06-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2021.675494/full |
| _version_ | 1819103087096233984 |
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| author | Wenhai Qu Weiyi Yao Jinbiao Xiong Xu Cheng |
| author_facet | Wenhai Qu Weiyi Yao Jinbiao Xiong Xu Cheng |
| author_sort | Wenhai Qu |
| collection | DOAJ |
| description | Axial and lateral pressure loss in a 5 × 5 rod–bundle with a split-type mixing vane spacer grid was experimentally measured using differential pressure transmitters at different sub-channel Reynolds numbers (Re) and orienting angles. The geometrical parameters of the 5 × 5–rod bundle are as follows: they have the same diameter (D = 9.5 mm) and pitch (p = 12.6 mm) as those of real fuel rods of a typical pressurized water reactor (PWR), with a sub-channel hydraulic diameter (Dh) of 11.78 mm. The characteristics and resistance models of pressure loss are discussed. The main axial pressure loss is caused by the spacer grid, and the spacer grid generates additional wall friction pressure loss downstream of the spacer grid. The lateral pressure loss shows strong correlations with orienting angles and distance from the spacer grid. The lateral pressure loss shows a sudden burst in the mixing vanes region and a slight augmentation at z = 3Dh. After 3Dh, the lateral pressure loss decays in an exponential way with distance from the spacer grid, and it becomes constant quickly at z = 20Dh. |
| first_indexed | 2024-12-22T01:44:53Z |
| format | Article |
| id | doaj.art-5600335fd17f402f94959ea0f7236727 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-12-22T01:44:53Z |
| publishDate | 2021-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-5600335fd17f402f94959ea0f72367272022-12-21T18:43:06ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2021-06-01910.3389/fenrg.2021.675494675494Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer GridWenhai Qu0Weiyi Yao1Jinbiao Xiong2Xu Cheng3School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, ChinaSchool of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, ChinaSchool of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, ChinaInstitute of Fusion and Reactor Technology, Karlsruhe Institute of Technology, Karlsruhe, GermanyAxial and lateral pressure loss in a 5 × 5 rod–bundle with a split-type mixing vane spacer grid was experimentally measured using differential pressure transmitters at different sub-channel Reynolds numbers (Re) and orienting angles. The geometrical parameters of the 5 × 5–rod bundle are as follows: they have the same diameter (D = 9.5 mm) and pitch (p = 12.6 mm) as those of real fuel rods of a typical pressurized water reactor (PWR), with a sub-channel hydraulic diameter (Dh) of 11.78 mm. The characteristics and resistance models of pressure loss are discussed. The main axial pressure loss is caused by the spacer grid, and the spacer grid generates additional wall friction pressure loss downstream of the spacer grid. The lateral pressure loss shows strong correlations with orienting angles and distance from the spacer grid. The lateral pressure loss shows a sudden burst in the mixing vanes region and a slight augmentation at z = 3Dh. After 3Dh, the lateral pressure loss decays in an exponential way with distance from the spacer grid, and it becomes constant quickly at z = 20Dh.https://www.frontiersin.org/articles/10.3389/fenrg.2021.675494/fullpressure lossresistance model developmentrod bundle assemblyspacer gridsliding pressure loss measurement |
| spellingShingle | Wenhai Qu Weiyi Yao Jinbiao Xiong Xu Cheng Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid Frontiers in Energy Research pressure loss resistance model development rod bundle assembly spacer grid sliding pressure loss measurement |
| title | Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid |
| title_full | Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid |
| title_fullStr | Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid |
| title_full_unstemmed | Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid |
| title_short | Experimental Study of Pressure Loss in a 5 × 5–Rod Bundle With the Mixing Vane Spacer Grid |
| title_sort | experimental study of pressure loss in a 5 5 rod bundle with the mixing vane spacer grid |
| topic | pressure loss resistance model development rod bundle assembly spacer grid sliding pressure loss measurement |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2021.675494/full |
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