Near-surface topology and flow structure on a delta wing with low sweep angle
The patterns of streamline topology, surface-normal vorticity and fluctuating velocity are characterized immediately adjacent to the surface of a delta wing having a low sweep angle (Λ=38º) using a cinema technique of high-image-density particle image velocimetry. The critical points of the topologi...
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2017
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| Online Access: | http://hdl.handle.net/10725/6006 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://adsabs.harvard.edu/abs/2003APS..DFD.JJ008Y |
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| _version_ | 1864513478245482497 |
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| author | Elkhoury, Michel |
| author2 | Yavuz, Metin Rockwell, Donald |
| author2_role | author author |
| author_facet | Elkhoury, Michel Yavuz, Metin Rockwell, Donald |
| author_role | author |
| dc.creator.none.fl_str_mv | Elkhoury, Michel Yavuz, Metin Rockwell, Donald |
| dc.date.none.fl_str_mv | 2017-08-03T08:41:26Z 2017-08-03T08:41:26Z 2017-08-03 |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10725/6006 Yavuz, M., Elkhoury, M., & Rockwell, D. (2003, November). Near-Surface Topology and Flow Structure on a Delta Wing with Low Sweep Angle. In APS Division of Fluid Dynamics Meeting Abstracts. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://adsabs.harvard.edu/abs/2003APS..DFD.JJ008Y |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | APS |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Near-surface topology and flow structure on a delta wing with low sweep angle |
| dc.type.none.fl_str_mv | Conference Paper / Proceeding info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject |
| description | The patterns of streamline topology, surface-normal vorticity and fluctuating velocity are characterized immediately adjacent to the surface of a delta wing having a low sweep angle (Λ=38º) using a cinema technique of high-image-density particle image velocimetry. The critical points of the topological structure, including foci, nodes and bifurcation lines, are determined in relation to patterns of vorticity and velocity and, in turn, compared with dye visualization, as well as time-averaged approximations to the topology obtained using oil film visualization in a previous wind tunnel experiment. It is demonstrated that the classical time-averaged topology is actually attributable to a series of quite different instantaneous topological states. Small-amplitude perturbation of the angle-of-attack of the wing at an appropriate frequency is shown to radically alter the time-averaged topology, as well as the patterns of velocity fluctuation associated with buffet loading of the wing. |
| eu_rights_str_mv | openAccess |
| format | conferenceObject |
| id | LAURepo_413efdf1be92442e1f7d9ee54b491298 |
| identifier_str_mv | Yavuz, M., Elkhoury, M., & Rockwell, D. (2003, November). Near-Surface Topology and Flow Structure on a Delta Wing with Low Sweep Angle. In APS Division of Fluid Dynamics Meeting Abstracts. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/6006 |
| publishDate | 2017 |
| publisher.none.fl_str_mv | APS |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Near-surface topology and flow structure on a delta wing with low sweep angleElkhoury, MichelYavuz, MetinRockwell, DonaldThe patterns of streamline topology, surface-normal vorticity and fluctuating velocity are characterized immediately adjacent to the surface of a delta wing having a low sweep angle (Λ=38º) using a cinema technique of high-image-density particle image velocimetry. The critical points of the topological structure, including foci, nodes and bifurcation lines, are determined in relation to patterns of vorticity and velocity and, in turn, compared with dye visualization, as well as time-averaged approximations to the topology obtained using oil film visualization in a previous wind tunnel experiment. It is demonstrated that the classical time-averaged topology is actually attributable to a series of quite different instantaneous topological states. Small-amplitude perturbation of the angle-of-attack of the wing at an appropriate frequency is shown to radically alter the time-averaged topology, as well as the patterns of velocity fluctuation associated with buffet loading of the wing.N/AAPS2017-08-03T08:41:26Z2017-08-03T08:41:26Z2017-08-03Conference Paper / Proceedinginfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10725/6006Yavuz, M., Elkhoury, M., & Rockwell, D. (2003, November). Near-Surface Topology and Flow Structure on a Delta Wing with Low Sweep Angle. In APS Division of Fluid Dynamics Meeting Abstracts.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttp://adsabs.harvard.edu/abs/2003APS..DFD.JJ008Yeninfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/60062021-03-19T10:00:49Z |
| spellingShingle | Near-surface topology and flow structure on a delta wing with low sweep angle Elkhoury, Michel |
| status_str | publishedVersion |
| title | Near-surface topology and flow structure on a delta wing with low sweep angle |
| title_full | Near-surface topology and flow structure on a delta wing with low sweep angle |
| title_fullStr | Near-surface topology and flow structure on a delta wing with low sweep angle |
| title_full_unstemmed | Near-surface topology and flow structure on a delta wing with low sweep angle |
| title_short | Near-surface topology and flow structure on a delta wing with low sweep angle |
| title_sort | Near-surface topology and flow structure on a delta wing with low sweep angle |
| url | http://hdl.handle.net/10725/6006 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://adsabs.harvard.edu/abs/2003APS..DFD.JJ008Y |