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Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows
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| Zeitschriftentitel: | Thermal Science |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Thermal Science, 23, 2019, 3 Part A, S. 1379-1386 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
National Library of Serbia
|
| Schlagwörter: |
| author_facet |
Wang, Wei Sun, Xiao-Jiao Gao, Yang Guan, Xin-Lei Guo, Chu-Wen Wang, Li-Jun Wang, Wei Sun, Xiao-Jiao Gao, Yang Guan, Xin-Lei Guo, Chu-Wen Wang, Li-Jun |
|---|---|
| author |
Wang, Wei Sun, Xiao-Jiao Gao, Yang Guan, Xin-Lei Guo, Chu-Wen Wang, Li-Jun |
| spellingShingle |
Wang, Wei Sun, Xiao-Jiao Gao, Yang Guan, Xin-Lei Guo, Chu-Wen Wang, Li-Jun Thermal Science Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows Renewable Energy, Sustainability and the Environment |
| author_sort |
wang, wei |
| spelling |
Wang, Wei Sun, Xiao-Jiao Gao, Yang Guan, Xin-Lei Guo, Chu-Wen Wang, Li-Jun 0354-9836 2334-7163 National Library of Serbia Renewable Energy, Sustainability and the Environment http://dx.doi.org/10.2298/tsci180605136w <jats:p>Experiments and numerical simulations were both performed to investigate coherent structures and heat transfer process in a square pipe turbulent flows induced by arc vortex generator. The velocity fields of induced turbulent flow was obtained by planar particle image velocimetry. The analysis of velocity profiles revealed the co-existence of various coherent structures. Turbulent fluctuation quantities, such as turbulent intensities, Reynolds stress, etc. exhibited the different behaviors of fluid motions introduced by arc vortex generator. Probability density function of swirling strength showed the complication of the vortex-rotating. Heat transfer process was simulated using large eddy simulation. The results of Nusselt number achieved the maximal improvement 57% with the use of arc vortex generator. The distribution of Nusselt number was in good agreement with the distribution of coherent structures, especially hairpin vortices and subsequent secondary coherent structures, which highlighted the influence of coherent structures by arc vortex generator on heat transfer enhancement.</jats:p> Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows Thermal Science |
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10.2298/tsci180605136w |
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National Library of Serbia, 2019 |
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National Library of Serbia, 2019 |
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0354-9836 2334-7163 |
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2019 |
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National Library of Serbia |
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Thermal Science |
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49 |
| title |
Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_unstemmed |
Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_full |
Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_fullStr |
Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_full_unstemmed |
Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_short |
Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_sort |
enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| topic |
Renewable Energy, Sustainability and the Environment |
| url |
http://dx.doi.org/10.2298/tsci180605136w |
| publishDate |
2019 |
| physical |
1379-1386 |
| description |
<jats:p>Experiments and numerical simulations were both performed to investigate coherent structures and heat transfer process in a square pipe turbulent flows induced by arc vortex generator. The velocity fields of induced turbulent flow was obtained by planar particle image velocimetry. The analysis of velocity profiles revealed the co-existence of various coherent structures. Turbulent fluctuation quantities, such as turbulent intensities, Reynolds stress, etc. exhibited the different behaviors of fluid motions introduced by arc vortex generator. Probability density function of swirling strength showed the complication of the vortex-rotating. Heat transfer process was simulated using large eddy simulation. The results of Nusselt number achieved the maximal improvement 57% with the use of arc vortex generator. The distribution of Nusselt number was in good agreement with the distribution of coherent structures, especially hairpin vortices and subsequent secondary coherent structures, which highlighted the influence of coherent structures by arc vortex generator on heat transfer enhancement.</jats:p> |
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| author | Wang, Wei, Sun, Xiao-Jiao, Gao, Yang, Guan, Xin-Lei, Guo, Chu-Wen, Wang, Li-Jun |
| author_facet | Wang, Wei, Sun, Xiao-Jiao, Gao, Yang, Guan, Xin-Lei, Guo, Chu-Wen, Wang, Li-Jun, Wang, Wei, Sun, Xiao-Jiao, Gao, Yang, Guan, Xin-Lei, Guo, Chu-Wen, Wang, Li-Jun |
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| description | <jats:p>Experiments and numerical simulations were both performed to investigate coherent structures and heat transfer process in a square pipe turbulent flows induced by arc vortex generator. The velocity fields of induced turbulent flow was obtained by planar particle image velocimetry. The analysis of velocity profiles revealed the co-existence of various coherent structures. Turbulent fluctuation quantities, such as turbulent intensities, Reynolds stress, etc. exhibited the different behaviors of fluid motions introduced by arc vortex generator. Probability density function of swirling strength showed the complication of the vortex-rotating. Heat transfer process was simulated using large eddy simulation. The results of Nusselt number achieved the maximal improvement 57% with the use of arc vortex generator. The distribution of Nusselt number was in good agreement with the distribution of coherent structures, especially hairpin vortices and subsequent secondary coherent structures, which highlighted the influence of coherent structures by arc vortex generator on heat transfer enhancement.</jats:p> |
| doi_str_mv | 10.2298/tsci180605136w |
| facet_avail | Online, Free |
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| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMjI5OC90c2NpMTgwNjA1MTM2dw |
| imprint | National Library of Serbia, 2019 |
| imprint_str_mv | National Library of Serbia, 2019 |
| institution | DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3 |
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| issn_str_mv | 0354-9836, 2334-7163 |
| language | English |
| last_indexed | 2024-03-01T13:36:21.073Z |
| match_str | wang2019enhancedheattransferundertheinfluenceofcoherentstructureinducedbyarcvortexgeneratorinsquarepipeflows |
| mega_collection | National Library of Serbia (CrossRef) |
| physical | 1379-1386 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| publisher | National Library of Serbia |
| record_format | ai |
| recordtype | ai |
| series | Thermal Science |
| source_id | 49 |
| spelling | Wang, Wei Sun, Xiao-Jiao Gao, Yang Guan, Xin-Lei Guo, Chu-Wen Wang, Li-Jun 0354-9836 2334-7163 National Library of Serbia Renewable Energy, Sustainability and the Environment http://dx.doi.org/10.2298/tsci180605136w <jats:p>Experiments and numerical simulations were both performed to investigate coherent structures and heat transfer process in a square pipe turbulent flows induced by arc vortex generator. The velocity fields of induced turbulent flow was obtained by planar particle image velocimetry. The analysis of velocity profiles revealed the co-existence of various coherent structures. Turbulent fluctuation quantities, such as turbulent intensities, Reynolds stress, etc. exhibited the different behaviors of fluid motions introduced by arc vortex generator. Probability density function of swirling strength showed the complication of the vortex-rotating. Heat transfer process was simulated using large eddy simulation. The results of Nusselt number achieved the maximal improvement 57% with the use of arc vortex generator. The distribution of Nusselt number was in good agreement with the distribution of coherent structures, especially hairpin vortices and subsequent secondary coherent structures, which highlighted the influence of coherent structures by arc vortex generator on heat transfer enhancement.</jats:p> Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows Thermal Science |
| spellingShingle | Wang, Wei, Sun, Xiao-Jiao, Gao, Yang, Guan, Xin-Lei, Guo, Chu-Wen, Wang, Li-Jun, Thermal Science, Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows, Renewable Energy, Sustainability and the Environment |
| title | Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_full | Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_fullStr | Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_full_unstemmed | Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_short | Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_sort | enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| title_unstemmed | Enhanced heat transfer under the influence of coherent structure induced by arc vortex generator in square pipe flows |
| topic | Renewable Energy, Sustainability and the Environment |
| url | http://dx.doi.org/10.2298/tsci180605136w |