Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations
Over the last few decades, researchers have been focusing on determining the critical attack angle at which dynamic stall occurs. This angle is usually determined by solving the Navier-Stokes equations, which include viscosity, pressure, gravity, and acceleration terms. However, Navier-Stokes equati...
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2023
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| Online Access: | http://dx.doi.org/10.1016/j.rineng.2023.101472 https://www.sciencedirect.com/science/article/pii/S2590123023005996 http://hdl.handle.net/10576/62127 |
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| _version_ | 1857415086523547648 |
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| author | Tohid, Adibi |
| author2 | Razavi, Seyed Esmail Ahmed, Shams Forruque Hassanpour, Hussein Saha, Suvash C. Muyeen, S.M. |
| author2_role | author author author author author |
| author_facet | Tohid, Adibi Razavi, Seyed Esmail Ahmed, Shams Forruque Hassanpour, Hussein Saha, Suvash C. Muyeen, S.M. |
| author_role | author |
| dc.creator.none.fl_str_mv | Tohid, Adibi Razavi, Seyed Esmail Ahmed, Shams Forruque Hassanpour, Hussein Saha, Suvash C. Muyeen, S.M. |
| dc.date.none.fl_str_mv | 2023-09-30 2025-01-13T08:58:34Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.rineng.2023.101472 Adibi, T., Razavi, S. E., Ahmed, S. F., Hassanpour, H., Saha, S. C., & Muyeen, S. M. (2023). Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations. Results in Engineering, 20, 101472. https://www.sciencedirect.com/science/article/pii/S2590123023005996 http://hdl.handle.net/10576/62127 20 2590-1230 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Dynamic stall Airfoil Euler equations Vortex Navier-Stokes Non-viscous |
| dc.title.none.fl_str_mv | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Over the last few decades, researchers have been focusing on determining the critical attack angle at which dynamic stall occurs. This angle is usually determined by solving the Navier-Stokes equations, which include viscosity, pressure, gravity, and acceleration terms. However, Navier-Stokes equations are quite complex to solve and consequently difficult to simulate, thus the simulation is not accurate enough. Therefore, this article predicts the critical attack angle for the first time using Euler equations devoid of viscous terms. One of the key advantages of Euler equations is their ability to capture the vortices and predict stall dynamics. The Euler equations are thus integrated and the resulting equations are discretized using the finite volume method. A first-order upwind-based method is used to calculate the convective fluxes at the cell boundaries in the finite volume approach. A NACA 0012 airfoil is chosen for this study at various attack angles with a Mach number of 0.3. Based on the justification of Crocco's theorem, the Euler equations successfully act as Navier-Stokes equations. The vortex patterns are found to behave independently of the artificial dissipation. All the vortices are successfully predicted using the inviscid governing equations. The numerical results obtained are validated by other published experimental and numerical data. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_4b6ae5ab984dcf4e05c576d2739f82e0 |
| identifier_str_mv | Adibi, T., Razavi, S. E., Ahmed, S. F., Hassanpour, H., Saha, S. C., & Muyeen, S. M. (2023). Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations. Results in Engineering, 20, 101472. 20 2590-1230 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/62127 |
| publishDate | 2023 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| spelling | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equationsTohid, AdibiRazavi, Seyed EsmailAhmed, Shams ForruqueHassanpour, HusseinSaha, Suvash C.Muyeen, S.M.Dynamic stallAirfoilEuler equationsVortexNavier-StokesNon-viscousOver the last few decades, researchers have been focusing on determining the critical attack angle at which dynamic stall occurs. This angle is usually determined by solving the Navier-Stokes equations, which include viscosity, pressure, gravity, and acceleration terms. However, Navier-Stokes equations are quite complex to solve and consequently difficult to simulate, thus the simulation is not accurate enough. Therefore, this article predicts the critical attack angle for the first time using Euler equations devoid of viscous terms. One of the key advantages of Euler equations is their ability to capture the vortices and predict stall dynamics. The Euler equations are thus integrated and the resulting equations are discretized using the finite volume method. A first-order upwind-based method is used to calculate the convective fluxes at the cell boundaries in the finite volume approach. A NACA 0012 airfoil is chosen for this study at various attack angles with a Mach number of 0.3. Based on the justification of Crocco's theorem, the Euler equations successfully act as Navier-Stokes equations. The vortex patterns are found to behave independently of the artificial dissipation. All the vortices are successfully predicted using the inviscid governing equations. The numerical results obtained are validated by other published experimental and numerical data.Open Access funding provided by the Qatar National Library.Elsevier2025-01-13T08:58:34Z2023-09-30Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.rineng.2023.101472Adibi, T., Razavi, S. E., Ahmed, S. F., Hassanpour, H., Saha, S. C., & Muyeen, S. M. (2023). Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations. Results in Engineering, 20, 101472.https://www.sciencedirect.com/science/article/pii/S2590123023005996http://hdl.handle.net/10576/62127202590-1230enhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/621272025-01-13T19:05:08Z |
| spellingShingle | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations Tohid, Adibi Dynamic stall Airfoil Euler equations Vortex Navier-Stokes Non-viscous |
| status_str | publishedVersion |
| title | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations |
| title_full | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations |
| title_fullStr | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations |
| title_full_unstemmed | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations |
| title_short | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations |
| title_sort | Predicting airfoil stalling dynamics using upwind numerical solutions to non-viscous equations |
| topic | Dynamic stall Airfoil Euler equations Vortex Navier-Stokes Non-viscous |
| url | http://dx.doi.org/10.1016/j.rineng.2023.101472 https://www.sciencedirect.com/science/article/pii/S2590123023005996 http://hdl.handle.net/10576/62127 |