Reynolds stress constrained large eddy simulation of separation flows in a U-duct
This paper presents Reynolds stress constrained large eddy simulation (RSC-LES) method applied to a U-duct flow. Different from traditional Reynolds-averaged Navier-Stokes/detached eddy simulation (RANS/DES) hybrid method (including DES method), the RSC-LES method solves the LES equations in the who...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2014-06-01
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| Series: | Propulsion and Power Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212540X14000200 |
| _version_ | 1797714259754352640 |
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| author | Quanyong Xu Yantao Yang |
| author_facet | Quanyong Xu Yantao Yang |
| author_sort | Quanyong Xu |
| collection | DOAJ |
| description | This paper presents Reynolds stress constrained large eddy simulation (RSC-LES) method applied to a U-duct flow. Different from traditional Reynolds-averaged Navier-Stokes/detached eddy simulation (RANS/DES) hybrid method (including DES method), the RSC-LES method solves the LES equations in the whole computation domain with the near-wall regions being constrained by a prescribed Reynolds stress. By doing so it is possible to overcome the log-law mismatch (LLM) problem in hybrid method. The RSC-LES results show better agreement with experiment result. Compared with RANS and DES, RSC-LES gives more accurate pressure coefficients and friction coefficients on the wall, because the RSC-LES method captures the separation point and reattachment point on the inner wall. The computation results show that the RSC-LES method has the potential to solve the log-law mismatch problem of RANS/DES hybrid method and predict complex phenomena of internal flow field. |
| first_indexed | 2024-03-12T07:48:41Z |
| format | Article |
| id | doaj.art-cfd51a48ba4b423487e6d735eb9fb331 |
| institution | Directory Open Access Journal |
| issn | 2212-540X |
| language | English |
| last_indexed | 2024-03-12T07:48:41Z |
| publishDate | 2014-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Propulsion and Power Research |
| spelling | doaj.art-cfd51a48ba4b423487e6d735eb9fb3312023-09-02T20:46:40ZengKeAi Communications Co., Ltd.Propulsion and Power Research2212-540X2014-06-0132495810.1016/j.jppr.2014.05.002Reynolds stress constrained large eddy simulation of separation flows in a U-ductQuanyong Xu0Yantao Yang1School of Aerospace, Tsinghua University, Beijing 100084, ChinaCenter for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, ChinaThis paper presents Reynolds stress constrained large eddy simulation (RSC-LES) method applied to a U-duct flow. Different from traditional Reynolds-averaged Navier-Stokes/detached eddy simulation (RANS/DES) hybrid method (including DES method), the RSC-LES method solves the LES equations in the whole computation domain with the near-wall regions being constrained by a prescribed Reynolds stress. By doing so it is possible to overcome the log-law mismatch (LLM) problem in hybrid method. The RSC-LES results show better agreement with experiment result. Compared with RANS and DES, RSC-LES gives more accurate pressure coefficients and friction coefficients on the wall, because the RSC-LES method captures the separation point and reattachment point on the inner wall. The computation results show that the RSC-LES method has the potential to solve the log-law mismatch problem of RANS/DES hybrid method and predict complex phenomena of internal flow field.http://www.sciencedirect.com/science/article/pii/S2212540X14000200Reynolds stress constrainLarge eddy simulationU-ductSeparationInternal flowComputational fluid dynamics |
| spellingShingle | Quanyong Xu Yantao Yang Reynolds stress constrained large eddy simulation of separation flows in a U-duct Propulsion and Power Research Reynolds stress constrain Large eddy simulation U-duct Separation Internal flow Computational fluid dynamics |
| title | Reynolds stress constrained large eddy simulation of separation flows in a U-duct |
| title_full | Reynolds stress constrained large eddy simulation of separation flows in a U-duct |
| title_fullStr | Reynolds stress constrained large eddy simulation of separation flows in a U-duct |
| title_full_unstemmed | Reynolds stress constrained large eddy simulation of separation flows in a U-duct |
| title_short | Reynolds stress constrained large eddy simulation of separation flows in a U-duct |
| title_sort | reynolds stress constrained large eddy simulation of separation flows in a u duct |
| topic | Reynolds stress constrain Large eddy simulation U-duct Separation Internal flow Computational fluid dynamics |
| url | http://www.sciencedirect.com/science/article/pii/S2212540X14000200 |
| work_keys_str_mv | AT quanyongxu reynoldsstressconstrainedlargeeddysimulationofseparationflowsinauduct AT yantaoyang reynoldsstressconstrainedlargeeddysimulationofseparationflowsinauduct |