Unstructured/Structured Overset Grid Simulation for the Third AIAA Sonic Boom Prediction Workshop
The Third AIAA Sonic Boom Prediction Workshop was held in January 2020, and in the near-field section of the workshop, several simulated near-field pressure signatures of the C608 airplane, an early version of the NASA X-59, were compared. The authors have applied the unstructured/structured overset...
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| Veröffentlicht in: | Journal of aircraft 2022-05, Vol.59 (3), p.660-669 |
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| container_title | Journal of aircraft |
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| creator | Ishikawa, Hiroaki Koganezawa, Shinya Makino, Yoshikazu |
| description | The Third AIAA Sonic Boom Prediction Workshop was held in January 2020, and in the near-field section of the workshop, several simulated near-field pressure signatures of the C608 airplane, an early version of the NASA X-59, were compared. The authors have applied the unstructured/structured overset grid method to the C608 airplane case. In this method, an unstructured grid is used in the vicinity of the airplane, and the flowfield at several body lengths away from the airplane is simulated by oversetting a structured Mach cone aligned grid with the unstructured grid. It is found that the near-field pressure signatures can be obtained accurately with sharp pressure jumps in the signature by using a fine structured grid in the midfield even when a relatively coarse unstructured grid is used in the near-field of the airplane. The results show that the unstructured/structured overset grid method is a way to obtain accurate near-field pressure signatures for sonic boom estimation efficiently. |
| doi_str_mv | 10.2514/1.C036388 |
| format | Article |
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The authors have applied the unstructured/structured overset grid method to the C608 airplane case. In this method, an unstructured grid is used in the vicinity of the airplane, and the flowfield at several body lengths away from the airplane is simulated by oversetting a structured Mach cone aligned grid with the unstructured grid. It is found that the near-field pressure signatures can be obtained accurately with sharp pressure jumps in the signature by using a fine structured grid in the midfield even when a relatively coarse unstructured grid is used in the near-field of the airplane. The results show that the unstructured/structured overset grid method is a way to obtain accurate near-field pressure signatures for sonic boom estimation efficiently.</description><identifier>ISSN: 1533-3868</identifier><identifier>ISSN: 0021-8669</identifier><identifier>EISSN: 1533-3868</identifier><identifier>DOI: 10.2514/1.C036388</identifier><language>eng</language><publisher>Virginia: American Institute of Aeronautics and Astronautics</publisher><subject>Aeronautics ; Finite volume method ; Geometry ; Grid method ; Near fields ; Numerical analysis ; Pressure jump ; Reynolds number ; Signatures ; Simulation ; Sonic booms ; Structured grids (mathematics) ; Turbulence models ; Unstructured grids (mathematics) ; Workshops</subject><ispartof>Journal of aircraft, 2022-05, Vol.59 (3), p.660-669</ispartof><rights>Copyright © 2021 by Hiroaki Ishikawa, Shinya Koganezawa, and Yoshikazu Makino. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. All requests for copying and permission to reprint should be submitted to CCC at ; employ the eISSN to initiate your request. See also AIAA Rights and Permissions .</rights><rights>Copyright © 2021 by Hiroaki Ishikawa, Shinya Koganezawa, and Yoshikazu Makino. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. All requests for copying and permission to reprint should be submitted to CCC at www.copyright.com; employ the eISSN 1533-3868 to initiate your request. 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The results show that the unstructured/structured overset grid method is a way to obtain accurate near-field pressure signatures for sonic boom estimation efficiently.</description><subject>Aeronautics</subject><subject>Finite volume method</subject><subject>Geometry</subject><subject>Grid method</subject><subject>Near fields</subject><subject>Numerical analysis</subject><subject>Pressure jump</subject><subject>Reynolds number</subject><subject>Signatures</subject><subject>Simulation</subject><subject>Sonic booms</subject><subject>Structured grids (mathematics)</subject><subject>Turbulence models</subject><subject>Unstructured grids (mathematics)</subject><subject>Workshops</subject><issn>1533-3868</issn><issn>0021-8669</issn><issn>1533-3868</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNplkEtLAzEUhYMoWKsL_0FAEFxMm8wjSZdj0VooVJgWl-E2D5raTmoyI_jvHW1RwdU5i--eezgIXVMySAuaD-lgTDKWCXGCerTIsiQTTJz-8efoIsYNIUQQznsIlnVsQquaNhg9rH4snr-bEE2DJ8FpXLldu4XG-RpbH3CzNnixdkHjclqWuPK1U_je-x1-7k6d-gZffHiNa7-_RGcWttFcHbWPlo8Pi_FTMptPpuNylkDK0iahdETBQgFaWNG1BWu1AApcELviCiilKl3lRWG0tbmwCgAIwEgLQ3ie8qyPbg65--DfWhMbufFtqLuXMmWMjXiRMtJRdwdKBR9jMFbug9tB-JCUyK8FJZXHBTv29sCCA_hN-w9-Aut4b8o</recordid><startdate>20220501</startdate><enddate>20220501</enddate><creator>Ishikawa, Hiroaki</creator><creator>Koganezawa, Shinya</creator><creator>Makino, Yoshikazu</creator><general>American Institute of Aeronautics and Astronautics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope><scope>U9A</scope></search><sort><creationdate>20220501</creationdate><title>Unstructured/Structured Overset Grid Simulation for the Third AIAA Sonic Boom Prediction Workshop</title><author>Ishikawa, Hiroaki ; Koganezawa, Shinya ; Makino, Yoshikazu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a262t-1191afa5ad8f8153affd8a1a780fb7ca111c2b455edff48fcaaa0aa9d8e074273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Aeronautics</topic><topic>Finite volume method</topic><topic>Geometry</topic><topic>Grid method</topic><topic>Near fields</topic><topic>Numerical analysis</topic><topic>Pressure jump</topic><topic>Reynolds number</topic><topic>Signatures</topic><topic>Simulation</topic><topic>Sonic booms</topic><topic>Structured grids (mathematics)</topic><topic>Turbulence models</topic><topic>Unstructured grids (mathematics)</topic><topic>Workshops</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ishikawa, Hiroaki</creatorcontrib><creatorcontrib>Koganezawa, Shinya</creatorcontrib><creatorcontrib>Makino, Yoshikazu</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of aircraft</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ishikawa, Hiroaki</au><au>Koganezawa, Shinya</au><au>Makino, Yoshikazu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Unstructured/Structured Overset Grid Simulation for the Third AIAA Sonic Boom Prediction Workshop</atitle><jtitle>Journal of aircraft</jtitle><date>2022-05-01</date><risdate>2022</risdate><volume>59</volume><issue>3</issue><spage>660</spage><epage>669</epage><pages>660-669</pages><issn>1533-3868</issn><issn>0021-8669</issn><eissn>1533-3868</eissn><abstract>The Third AIAA Sonic Boom Prediction Workshop was held in January 2020, and in the near-field section of the workshop, several simulated near-field pressure signatures of the C608 airplane, an early version of the NASA X-59, were compared. The authors have applied the unstructured/structured overset grid method to the C608 airplane case. In this method, an unstructured grid is used in the vicinity of the airplane, and the flowfield at several body lengths away from the airplane is simulated by oversetting a structured Mach cone aligned grid with the unstructured grid. It is found that the near-field pressure signatures can be obtained accurately with sharp pressure jumps in the signature by using a fine structured grid in the midfield even when a relatively coarse unstructured grid is used in the near-field of the airplane. The results show that the unstructured/structured overset grid method is a way to obtain accurate near-field pressure signatures for sonic boom estimation efficiently.</abstract><cop>Virginia</cop><pub>American Institute of Aeronautics and Astronautics</pub><doi>10.2514/1.C036388</doi><tpages>10</tpages></addata></record> |
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| ispartof | Journal of aircraft, 2022-05, Vol.59 (3), p.660-669 |
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| language | eng |
| recordid | cdi_crossref_primary_10_2514_1_C036388 |
| source | Alma/SFX Local Collection |
| subjects | Aeronautics Finite volume method Geometry Grid method Near fields Numerical analysis Pressure jump Reynolds number Signatures Simulation Sonic booms Structured grids (mathematics) Turbulence models Unstructured grids (mathematics) Workshops |
| title | Unstructured/Structured Overset Grid Simulation for the Third AIAA Sonic Boom Prediction Workshop |
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