Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex Geometry
The computational and experimental study results of swirling single-phase coolant motion and heat transfer for the standard operation parameters of a nuclear power plant are presented. The experimental model is a vertical heat exchanger of a “pipe in a pipe” type with the countercurrent movement of...
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MDPI AG
2024-12-01
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| author | Sergey Dmitriev Alexey Sobornov Andrey Kurkin |
| author_facet | Sergey Dmitriev Alexey Sobornov Andrey Kurkin |
| author_sort | Sergey Dmitriev |
| collection | DOAJ |
| description | The computational and experimental study results of swirling single-phase coolant motion and heat transfer for the standard operation parameters of a nuclear power plant are presented. The experimental model is a vertical heat exchanger of a “pipe in a pipe” type with the countercurrent movement of coolants. Six different swirlers (three with a constant twist pitch and three with a variable pitch) were considered. The heat exchanger temperature field was measured at various combinations of coolant flow rates, and a channel pressure drop for each swirl was determined. Computational studies were performed using the Omega-based Reynolds stress model and SST model with a correction for curvature streamlines. A good agreement between numerical and experimental data was obtained. Based on the velocity and temperature fields, swirling flow motion features in channels with a variable swirl pitch were discovered. For each intensifier, the effectiveness criterion in comparison with a pipe channel was determined. |
| format | Article |
| id | doaj-art-8cef3cd6eb2c466b91efe44873f4ed84 |
| institution | Kabale University |
| issn | 2311-5521 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj-art-8cef3cd6eb2c466b91efe44873f4ed842024-12-27T14:26:07ZengMDPI AGFluids2311-55212024-12-0191229310.3390/fluids9120293Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex GeometrySergey Dmitriev0Alexey Sobornov1Andrey Kurkin2Department of Atomic and Thermal Stations, Nizhny Novgorod State Technical University n.a. R.E. Alekseev, Nizhny Novgorod 603155, RussiaDepartment of Atomic and Thermal Stations, Nizhny Novgorod State Technical University n.a. R.E. Alekseev, Nizhny Novgorod 603155, RussiaDepartment of Applied Mathematics, Nizhny Novgorod State Technical University n.a. R.E. Alekseev, Nizhny Novgorod 603155, RussiaThe computational and experimental study results of swirling single-phase coolant motion and heat transfer for the standard operation parameters of a nuclear power plant are presented. The experimental model is a vertical heat exchanger of a “pipe in a pipe” type with the countercurrent movement of coolants. Six different swirlers (three with a constant twist pitch and three with a variable pitch) were considered. The heat exchanger temperature field was measured at various combinations of coolant flow rates, and a channel pressure drop for each swirl was determined. Computational studies were performed using the Omega-based Reynolds stress model and SST model with a correction for curvature streamlines. A good agreement between numerical and experimental data was obtained. Based on the velocity and temperature fields, swirling flow motion features in channels with a variable swirl pitch were discovered. For each intensifier, the effectiveness criterion in comparison with a pipe channel was determined.https://www.mdpi.com/2311-5521/9/12/293swirling flowheat transfer intensificationhydrodynamicsPWR heat exchangerscomputational fluid dynamicsOmega Reynolds stress model |
| spellingShingle | Sergey Dmitriev Alexey Sobornov Andrey Kurkin Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex Geometry Fluids swirling flow heat transfer intensification hydrodynamics PWR heat exchangers computational fluid dynamics Omega Reynolds stress model |
| title | Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex Geometry |
| title_full | Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex Geometry |
| title_fullStr | Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex Geometry |
| title_full_unstemmed | Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex Geometry |
| title_short | Features of Motion and Heat Transfer of Swirling Flows in Channels of Complex Geometry |
| title_sort | features of motion and heat transfer of swirling flows in channels of complex geometry |
| topic | swirling flow heat transfer intensification hydrodynamics PWR heat exchangers computational fluid dynamics Omega Reynolds stress model |
| url | https://www.mdpi.com/2311-5521/9/12/293 |
| work_keys_str_mv | AT sergeydmitriev featuresofmotionandheattransferofswirlingflowsinchannelsofcomplexgeometry AT alexeysobornov featuresofmotionandheattransferofswirlingflowsinchannelsofcomplexgeometry AT andreykurkin featuresofmotionandheattransferofswirlingflowsinchannelsofcomplexgeometry |