Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent Flow
Weapons bays have gained much attraction in the last decade, mainly in the context of next-generation aircraft. Although internal store carriage provides numerous advantages, aero-mechanical challenges still exist, particularly for safe store separation. Therefore, it is essential to gain fundamenta...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/10/11/935 |
| _version_ | 1797460639002656768 |
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| author | Hadar Ben-Gida |
| author_facet | Hadar Ben-Gida |
| author_sort | Hadar Ben-Gida |
| collection | DOAJ |
| description | Weapons bays have gained much attraction in the last decade, mainly in the context of next-generation aircraft. Although internal store carriage provides numerous advantages, aero-mechanical challenges still exist, particularly for safe store separation. Therefore, it is essential to gain fundamental knowledge of the flow field within weapons bays, which can be achieved by studying the flow within a more simplified geometry of a cavity. In this study, detached eddy simulations are performed using the Elastic-Zonal-Navier–Stokes-Solver (EZNSS) to characterize the unsteady turbulent flow within NASA’s benchmark rectangular cavity with a store model located at various positions. Simulations are performed at a Mach number of 0.4 and a Reynolds number of 7 million to form a transitional cavity flow, which is common in jet-fighter weapons bays. The numerical results are validated with experimental data for the empty cavity and cavity-with-store configurations. The effect of the store’s position on the cavity flow characteristics is analyzed and verified, as well as the aerodynamic loads exerted on the store. Results show a complex interaction between the store model and the cavity flow field, manifested by distortion of the wall pressure fluctuations and mean flow structures and large amplitude fluctuations of the loads exerted on the store. The insights reported herein can serve future development efforts of more accurate numerical frameworks for cavity-with-store configurations towards improving their applicability for weapons bays store separation in certification procedures. |
| first_indexed | 2024-03-09T17:07:55Z |
| format | Article |
| id | doaj.art-f30a8fe56fd54eff8a74b2c466da0ac0 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T17:07:55Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-f30a8fe56fd54eff8a74b2c466da0ac02023-11-24T14:22:46ZengMDPI AGAerospace2226-43102023-10-01101193510.3390/aerospace10110935Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent FlowHadar Ben-Gida0Aeronautical Engineering Branch, Israeli Air Force, Tel Aviv 6473428, IsraelWeapons bays have gained much attraction in the last decade, mainly in the context of next-generation aircraft. Although internal store carriage provides numerous advantages, aero-mechanical challenges still exist, particularly for safe store separation. Therefore, it is essential to gain fundamental knowledge of the flow field within weapons bays, which can be achieved by studying the flow within a more simplified geometry of a cavity. In this study, detached eddy simulations are performed using the Elastic-Zonal-Navier–Stokes-Solver (EZNSS) to characterize the unsteady turbulent flow within NASA’s benchmark rectangular cavity with a store model located at various positions. Simulations are performed at a Mach number of 0.4 and a Reynolds number of 7 million to form a transitional cavity flow, which is common in jet-fighter weapons bays. The numerical results are validated with experimental data for the empty cavity and cavity-with-store configurations. The effect of the store’s position on the cavity flow characteristics is analyzed and verified, as well as the aerodynamic loads exerted on the store. Results show a complex interaction between the store model and the cavity flow field, manifested by distortion of the wall pressure fluctuations and mean flow structures and large amplitude fluctuations of the loads exerted on the store. The insights reported herein can serve future development efforts of more accurate numerical frameworks for cavity-with-store configurations towards improving their applicability for weapons bays store separation in certification procedures.https://www.mdpi.com/2226-4310/10/11/935cavityCFDDESstore separation |
| spellingShingle | Hadar Ben-Gida Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent Flow Aerospace cavity CFD DES store separation |
| title | Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent Flow |
| title_full | Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent Flow |
| title_fullStr | Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent Flow |
| title_full_unstemmed | Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent Flow |
| title_short | Detached Eddy Simulations of Cavity-Store Interactions at Subsonic Turbulent Flow |
| title_sort | detached eddy simulations of cavity store interactions at subsonic turbulent flow |
| topic | cavity CFD DES store separation |
| url | https://www.mdpi.com/2226-4310/10/11/935 |
| work_keys_str_mv | AT hadarbengida detachededdysimulationsofcavitystoreinteractionsatsubsonicturbulentflow |