Direct numerical simulation of a NACA0012 in full stall
This work aims at investigating the mechanisms of separation and the transition to turbulence in the separated shear-layer of aerodynamic profiles, while at the same time to gain insight into coherent structures formed in the separated zone at low-to-moderate Reynolds numbers. To do this, direct num...
| Authors: | ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2013 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/21438 |
| Online Access: | https://hdl.handle.net/2117/21438 https://dx.doi.org/10.1016/j.ijheatfluidflow.2013.05.002 |
| Access Level: | Open access |
| Keyword: | Fluid mechanics Turbulence Mecànica de fluids Turbulència Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| _version_ | 1878741090018787328 |
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| author | Rodríguez Pérez, Ivette María|||0000-0002-3749-277X |
| author2 | Lehmkuhl Barba, Oriol|||0000-0002-2670-1871 Borrell Pol, Ricard Oliva Llena, Asensio|||0000-0002-2805-4794 |
| author2_role | author author author |
| author_browse | Borrell Pol, Ricard Lehmkuhl Barba, Oriol|||0000-0002-2670-1871 Oliva Llena, Asensio|||0000-0002-2805-4794 Rodríguez Pérez, Ivette María|||0000-0002-3749-277X |
| author_facet | Rodríguez Pérez, Ivette María|||0000-0002-3749-277X Lehmkuhl Barba, Oriol|||0000-0002-2670-1871 Borrell Pol, Ricard Oliva Llena, Asensio|||0000-0002-2805-4794 |
| author_role | author |
| collection | UPCommons. Portal del coneixement obert de la UPC |
| description | This work aims at investigating the mechanisms of separation and the transition to turbulence in the separated shear-layer of aerodynamic profiles, while at the same time to gain insight into coherent structures formed in the separated zone at low-to-moderate Reynolds numbers. To do this, direct numerical simulations of the flow past a NACA0012 airfoil at Reynolds numbers Re = 50,000 (based on the free-stream velocity and the airfoil chord) and angles of attack AOA = 9.25 and AOA = 12 have been carried out. At low-to-moderate Reynolds numbers, NACA0012 exhibits a combination of leading-edge/trailing-edge stall which causes the massive separation of the flow on the suction side of the airfoil. The initially laminar shear layer undergoes transition to turbulence and vortices formed are shed forming a von Kármán like vortex street in the airfoil wake. The main characteristics of this flow together with its main features, including power spectra of a set of selected monitoring probes at different positions on the suction side and in the wake of the airfoil are provided and discussed in detail. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_dedffec35a2fdaaadd4bfdc1aaa0292e |
| institution | Universitat Politècnica de Catalunya (UPC) |
| instname_str | Universitat Politècnica de Catalunya (UPC) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:upcommons.upc.edu:2117/21438 |
| publishDate | 2013 |
| publishDateSort | 2013 |
| reponame_str | UPCommons. Portal del coneixement obert de la UPC |
| spelling | Direct numerical simulation of a NACA0012 in full stall Rodríguez Pérez, Ivette María|||0000-0002-3749-277X Lehmkuhl Barba, Oriol|||0000-0002-2670-1871 Borrell Pol, Ricard Oliva Llena, Asensio|||0000-0002-2805-4794 Fluid mechanics Turbulence Mecànica de fluids Turbulència Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids This work aims at investigating the mechanisms of separation and the transition to turbulence in the separated shear-layer of aerodynamic profiles, while at the same time to gain insight into coherent structures formed in the separated zone at low-to-moderate Reynolds numbers. To do this, direct numerical simulations of the flow past a NACA0012 airfoil at Reynolds numbers Re = 50,000 (based on the free-stream velocity and the airfoil chord) and angles of attack AOA = 9.25 and AOA = 12 have been carried out. At low-to-moderate Reynolds numbers, NACA0012 exhibits a combination of leading-edge/trailing-edge stall which causes the massive separation of the flow on the suction side of the airfoil. The initially laminar shear layer undergoes transition to turbulence and vortices formed are shed forming a von Kármán like vortex street in the airfoil wake. The main characteristics of this flow together with its main features, including power spectra of a set of selected monitoring probes at different positions on the suction side and in the wake of the airfoil are provided and discussed in detail. Peer Reviewed https://hdl.handle.net/2117/21438 https://dx.doi.org/10.1016/j.ijheatfluidflow.2013.05.002 |
| spellingShingle | Direct numerical simulation of a NACA0012 in full stall Rodríguez Pérez, Ivette María|||0000-0002-3749-277X Fluid mechanics Turbulence Mecànica de fluids Turbulència Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| title | Direct numerical simulation of a NACA0012 in full stall |
| title_full | Direct numerical simulation of a NACA0012 in full stall |
| title_fullStr | Direct numerical simulation of a NACA0012 in full stall |
| title_full_unstemmed | Direct numerical simulation of a NACA0012 in full stall |
| title_short | Direct numerical simulation of a NACA0012 in full stall |
| title_sort | Direct numerical simulation of a NACA0012 in full stall |
| topic | Fluid mechanics Turbulence Mecànica de fluids Turbulència Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| topic_facet | Fluid mechanics Turbulence Mecànica de fluids Turbulència Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| url | https://hdl.handle.net/2117/21438 https://dx.doi.org/10.1016/j.ijheatfluidflow.2013.05.002 |