Effect of airfoil distance to water surface on static stall
In this study, viscous, turbulent, and steady flow around an airfoil near the water surface has been simulated through a numerical method. In this simulation, Navier-Stokes equations have been solved using the finite volume method with a discretized second-order accuracy and PIMPLE algorithm. The Vo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Universiti Malaysia Pahang Publishing
2020-03-01
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| Series: | Journal of Mechanical Engineering and Sciences |
| Subjects: | |
| Online Access: | https://journal.ump.edu.my/jmes/article/view/1736 |
| _version_ | 1797699223806803968 |
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| author | Y. Azargoon M. H. Djavareshkian E. Esmaeilifar |
| author_facet | Y. Azargoon M. H. Djavareshkian E. Esmaeilifar |
| author_sort | Y. Azargoon |
| collection | DOAJ |
| description | In this study, viscous, turbulent, and steady flow around an airfoil near the water surface has been simulated through a numerical method. In this simulation, Navier-Stokes equations have been solved using the finite volume method with a discretized second-order accuracy and PIMPLE algorithm. The Volume of Fraction (VOF) method has been employed to predict the free surface flow. A part of the simulation results has been validated through numerical and experimental data. Besides considering the style of flow separation in the angles of numerous attacks and airfoil static stall near the surface of the water. For this purpose, the airfoil simulation has been processed airfoil in the 68,000 Reynolds number, angle of attack of 2.5 to 11 degree and different distances from the water surface ( h/c = 0.5, 1, ). In a larger angle of attacks, flow is initially separated from the leading edge of the surface, and then it attaches to the surface at a lower point. This reattachment leads to an increase in adverse pressure gradient and the formation of a larger separation in the downstream of the airfoil. The pressure gradient dramatically increases, and the flow gets separated from the upstream of the airfoil. Upon lowering distance from the surface, static stall takes place at a higher point and a lower angle of attack, respectively. |
| first_indexed | 2024-03-12T04:05:52Z |
| format | Article |
| id | doaj.art-ab65cd9bac6c4af09135cff7ac2343a9 |
| institution | Directory Open Access Journal |
| issn | 2289-4659 2231-8380 |
| language | English |
| last_indexed | 2024-03-12T04:05:52Z |
| publishDate | 2020-03-01 |
| publisher | Universiti Malaysia Pahang Publishing |
| record_format | Article |
| series | Journal of Mechanical Engineering and Sciences |
| spelling | doaj.art-ab65cd9bac6c4af09135cff7ac2343a92023-09-03T11:20:00ZengUniversiti Malaysia Pahang PublishingJournal of Mechanical Engineering and Sciences2289-46592231-83802020-03-011416526653710.15282/jmes.14.1.2020.27.0512Effect of airfoil distance to water surface on static stallY. Azargoon0M. H. Djavareshkian1E. Esmaeilifar2Department of Mechanical Engineering, Ferdowsi University of Mashhad, IranDepartment of Mechanical Engineering, Ferdowsi University of Mashhad, IranDepartment of Mechanical Engineering, Ferdowsi University of Mashhad, IranIn this study, viscous, turbulent, and steady flow around an airfoil near the water surface has been simulated through a numerical method. In this simulation, Navier-Stokes equations have been solved using the finite volume method with a discretized second-order accuracy and PIMPLE algorithm. The Volume of Fraction (VOF) method has been employed to predict the free surface flow. A part of the simulation results has been validated through numerical and experimental data. Besides considering the style of flow separation in the angles of numerous attacks and airfoil static stall near the surface of the water. For this purpose, the airfoil simulation has been processed airfoil in the 68,000 Reynolds number, angle of attack of 2.5 to 11 degree and different distances from the water surface ( h/c = 0.5, 1, ). In a larger angle of attacks, flow is initially separated from the leading edge of the surface, and then it attaches to the surface at a lower point. This reattachment leads to an increase in adverse pressure gradient and the formation of a larger separation in the downstream of the airfoil. The pressure gradient dramatically increases, and the flow gets separated from the upstream of the airfoil. Upon lowering distance from the surface, static stall takes place at a higher point and a lower angle of attack, respectively.https://journal.ump.edu.my/jmes/article/view/1736water surfaceseparationstatic stallairfoil |
| spellingShingle | Y. Azargoon M. H. Djavareshkian E. Esmaeilifar Effect of airfoil distance to water surface on static stall Journal of Mechanical Engineering and Sciences water surface separation static stall airfoil |
| title | Effect of airfoil distance to water surface on static stall |
| title_full | Effect of airfoil distance to water surface on static stall |
| title_fullStr | Effect of airfoil distance to water surface on static stall |
| title_full_unstemmed | Effect of airfoil distance to water surface on static stall |
| title_short | Effect of airfoil distance to water surface on static stall |
| title_sort | effect of airfoil distance to water surface on static stall |
| topic | water surface separation static stall airfoil |
| url | https://journal.ump.edu.my/jmes/article/view/1736 |
| work_keys_str_mv | AT yazargoon effectofairfoildistancetowatersurfaceonstaticstall AT mhdjavareshkian effectofairfoildistancetowatersurfaceonstaticstall AT eesmaeilifar effectofairfoildistancetowatersurfaceonstaticstall |