Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round Jets
Parallel underexpanded round jets system has been widely used in engineering applications, and the flow field structures are very complex because of the jets interaction. In this paper, we studied the near-field mixing phenomenon in parallel dual underexpanded jets numerically by solving the Reynold...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/7935101 |
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| _version_ | 1850173667856613376 |
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| author | Xie Zheng Xie Jian Jiang Wei Du Wenzheng |
| author_facet | Xie Zheng Xie Jian Jiang Wei Du Wenzheng |
| author_sort | Xie Zheng |
| collection | DOAJ |
| description | Parallel underexpanded round jets system has been widely used in engineering applications, and the flow field structures are very complex because of the jets interaction. In this paper, we studied the near-field mixing phenomenon in parallel dual underexpanded jets numerically by solving the Reynolds-Averaged Navier-Stokes Equations. The numerical results agree well with experimental data acquired by particle image velocimetry. Similar to plane jets, to some degree, two round jets are deflected towards the dual nozzle symmetry plane; the flow field can also be divided into three regions. Meanwhile, attempts have been made to predict merge point and combine point locations on certain cross profile of computational domain by correlating them with jet spacing and jet pressure ratio. The jet spacing plays an important role in jets interaction, and jet interaction decreases with the increase in jet spacing. The jets interaction in terms of merge (combine) point and pressure varies significantly while the jet spacing differs. Additionally, as pressure ratio increases, the effect of jet interaction decreases, and the merge (combine) point location moves downstream. |
| format | Article |
| id | doaj-art-cb0ca750b64441f0bee964c18cf2065c |
| institution | OA Journals |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-cb0ca750b64441f0bee964c18cf2065c2025-08-20T02:19:48ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742016-01-01201610.1155/2016/79351017935101Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round JetsXie Zheng0Xie Jian1Jiang Wei2Du Wenzheng3Xi’an High Technology Research Institute, Xi’an 710025, ChinaXi’an High Technology Research Institute, Xi’an 710025, ChinaXi’an High Technology Research Institute, Xi’an 710025, ChinaXi’an High Technology Research Institute, Xi’an 710025, ChinaParallel underexpanded round jets system has been widely used in engineering applications, and the flow field structures are very complex because of the jets interaction. In this paper, we studied the near-field mixing phenomenon in parallel dual underexpanded jets numerically by solving the Reynolds-Averaged Navier-Stokes Equations. The numerical results agree well with experimental data acquired by particle image velocimetry. Similar to plane jets, to some degree, two round jets are deflected towards the dual nozzle symmetry plane; the flow field can also be divided into three regions. Meanwhile, attempts have been made to predict merge point and combine point locations on certain cross profile of computational domain by correlating them with jet spacing and jet pressure ratio. The jet spacing plays an important role in jets interaction, and jet interaction decreases with the increase in jet spacing. The jets interaction in terms of merge (combine) point and pressure varies significantly while the jet spacing differs. Additionally, as pressure ratio increases, the effect of jet interaction decreases, and the merge (combine) point location moves downstream.http://dx.doi.org/10.1155/2016/7935101 |
| spellingShingle | Xie Zheng Xie Jian Jiang Wei Du Wenzheng Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round Jets International Journal of Aerospace Engineering |
| title | Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round Jets |
| title_full | Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round Jets |
| title_fullStr | Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round Jets |
| title_full_unstemmed | Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round Jets |
| title_short | Numerical and Experimental Investigation of Near-Field Mixing in Parallel Dual Round Jets |
| title_sort | numerical and experimental investigation of near field mixing in parallel dual round jets |
| url | http://dx.doi.org/10.1155/2016/7935101 |
| work_keys_str_mv | AT xiezheng numericalandexperimentalinvestigationofnearfieldmixinginparalleldualroundjets AT xiejian numericalandexperimentalinvestigationofnearfieldmixinginparalleldualroundjets AT jiangwei numericalandexperimentalinvestigationofnearfieldmixinginparalleldualroundjets AT duwenzheng numericalandexperimentalinvestigationofnearfieldmixinginparalleldualroundjets |