Development of Vortex Asymmetry on a Generic Projectile Configuration.
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| Title: | Development of Vortex Asymmetry on a Generic Projectile Configuration. |
|---|---|
| Authors: | Kumar, Roopesh1, Kumar, Rajan2, DeSpirito, James3 |
| Source: | Journal of Spacecraft & Rockets. Nov2022, Vol. 59 Issue 6, p1885-1903. 19p. |
| Abstract: | A combined experimental and numerical study was carried out to understand the development of vortices on the U.S. Army/Navy basic finner configuration at high angles of incidence. The experiments were carried out at the Florida A&M University and Florida State University low-speed wind tunnel, and numerical simulations were performed at U.S. Army Research Laboratory using the U.S. Department of Defense Kestrel solver. The results show a good agreement of basic aerodynamic characteristics between the experimental data and numerical simulations at low angles of incidence over the range of flow conditions; however, at high angles of incidence, the predicted aerodynamic coefficients from simulations were relatively lower. Both experimental and numerical simulation results show that asymmetric vortices develop on the cone cylinder and interact with the fins downstream at high angles of incidence. The primary vortices eventually lift off from the body, resulting in multiple secondary shear-layer vortices. The vortex liftoff location moves upstream with an increase in angles of incidence. The liftoff location of the two primary vortices can result in a change of side-force magnitude and direction. At supersonic speeds, the characteristics of the two primary vortices in terms of their size, strength, and the location on the body are very different as compared to those at subsonic speeds. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 175713225 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Development of Vortex Asymmetry on a Generic Projectile Configuration. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kumar%2C+Roopesh%22">Kumar, Roopesh</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kumar%2C+Rajan%22">Kumar, Rajan</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22DeSpirito%2C+James%22">DeSpirito, James</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Spacecraft+%26+Rockets%22">Journal of Spacecraft & Rockets</searchLink>. Nov2022, Vol. 59 Issue 6, p1885-1903. 19p. – Name: Abstract Label: Abstract Group: Ab Data: A combined experimental and numerical study was carried out to understand the development of vortices on the U.S. Army/Navy basic finner configuration at high angles of incidence. The experiments were carried out at the Florida A&M University and Florida State University low-speed wind tunnel, and numerical simulations were performed at U.S. Army Research Laboratory using the U.S. Department of Defense Kestrel solver. The results show a good agreement of basic aerodynamic characteristics between the experimental data and numerical simulations at low angles of incidence over the range of flow conditions; however, at high angles of incidence, the predicted aerodynamic coefficients from simulations were relatively lower. Both experimental and numerical simulation results show that asymmetric vortices develop on the cone cylinder and interact with the fins downstream at high angles of incidence. The primary vortices eventually lift off from the body, resulting in multiple secondary shear-layer vortices. The vortex liftoff location moves upstream with an increase in angles of incidence. The liftoff location of the two primary vortices can result in a change of side-force magnitude and direction. At supersonic speeds, the characteristics of the two primary vortices in terms of their size, strength, and the location on the body are very different as compared to those at subsonic speeds. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Spacecraft & Rockets is the property of American Institute of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=175713225 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2514/1.A35342 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 1885 Titles: – TitleFull: Development of Vortex Asymmetry on a Generic Projectile Configuration. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kumar, Roopesh – PersonEntity: Name: NameFull: Kumar, Rajan – PersonEntity: Name: NameFull: DeSpirito, James IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 00224650 Numbering: – Type: volume Value: 59 – Type: issue Value: 6 Titles: – TitleFull: Journal of Spacecraft & Rockets Type: main |
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