Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms
This paper serves as a summary of our recent work on LES for supersonic MVG. An implicitly implemented large eddy simulation (ILES) by using the fifth-order WENO scheme is applied to study the flow around the microramp vortex generator (MVG) at Mach 2.5 and Reθ=1440. A number of new discoveries on...
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Wiley
2011-01-01
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| Series: | Modelling and Simulation in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2011/934982 |
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| author | Qin Li Chaoqun Liu |
| author_facet | Qin Li Chaoqun Liu |
| author_sort | Qin Li |
| collection | DOAJ |
| description | This paper serves as a summary of our recent work on LES for supersonic MVG. An implicitly implemented large eddy simulation (ILES) by using the fifth-order WENO scheme is applied to study the flow around the microramp vortex generator (MVG) at Mach 2.5 and Reθ=1440. A number of new discoveries on the flow around supersonic MVG have been made including spiral points, surface separation topology, source of the momentum deficit, inflection surface, Kelvin-Helmholtz instability, vortex ring generation, ring-shock interaction, 3D recompression shock structure, and influence of MVG decline angles. Most of the new discoveries, which were made in 2009, were confirmed by experiment conducted by the UTA experimental team in 2010. A new 5-pair-vortex-tube model near the MVG is given based on the ILES observation. The vortex ring-shock interaction is found as the new mechanism of the reduction of the separation zone induced by the shock-boundary layer interaction. |
| format | Article |
| id | doaj-art-d2acafeae12643c49407a5c5af4eaaa7 |
| institution | Kabale University |
| issn | 1687-5591 1687-5605 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Modelling and Simulation in Engineering |
| spelling | doaj-art-d2acafeae12643c49407a5c5af4eaaa72025-08-20T03:24:07ZengWileyModelling and Simulation in Engineering1687-55911687-56052011-01-01201110.1155/2011/934982934982Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New MechanismsQin Li0Chaoqun Liu1Math Department, University of Texas at Arlington, 411 S. Nedderman Drive, Arlington, TX 76019-0408, USAMath Department, University of Texas at Arlington, 411 S. Nedderman Drive, Arlington, TX 76019-0408, USAThis paper serves as a summary of our recent work on LES for supersonic MVG. An implicitly implemented large eddy simulation (ILES) by using the fifth-order WENO scheme is applied to study the flow around the microramp vortex generator (MVG) at Mach 2.5 and Reθ=1440. A number of new discoveries on the flow around supersonic MVG have been made including spiral points, surface separation topology, source of the momentum deficit, inflection surface, Kelvin-Helmholtz instability, vortex ring generation, ring-shock interaction, 3D recompression shock structure, and influence of MVG decline angles. Most of the new discoveries, which were made in 2009, were confirmed by experiment conducted by the UTA experimental team in 2010. A new 5-pair-vortex-tube model near the MVG is given based on the ILES observation. The vortex ring-shock interaction is found as the new mechanism of the reduction of the separation zone induced by the shock-boundary layer interaction.http://dx.doi.org/10.1155/2011/934982 |
| spellingShingle | Qin Li Chaoqun Liu Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms Modelling and Simulation in Engineering |
| title | Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms |
| title_full | Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms |
| title_fullStr | Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms |
| title_full_unstemmed | Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms |
| title_short | Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms |
| title_sort | implicit les for supersonic microramp vortex generator new discoveries and new mechanisms |
| url | http://dx.doi.org/10.1155/2011/934982 |
| work_keys_str_mv | AT qinli implicitlesforsupersonicmicrorampvortexgeneratornewdiscoveriesandnewmechanisms AT chaoqunliu implicitlesforsupersonicmicrorampvortexgeneratornewdiscoveriesandnewmechanisms |