A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectile
Introduction/purpose: In this research, the influence of different turbulence models on the aerodynamic drag prediction of a generic spin-stabilized projectile was analyzed. The turbulence models chosen for investigation were one-equation Spalart-Allmaras, two-equation models Standard k-e, Realizabl...
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University of Defence in Belgrade
2025-01-01
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| Series: | Vojnotehnički Glasnik |
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| Online Access: | https://scindeks.ceon.rs/article.aspx?artid=0042-84692501115N |
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| author | Quang Tuan Nguyen |
| author_facet | Quang Tuan Nguyen |
| author_sort | Quang Tuan Nguyen |
| collection | DOAJ |
| description | Introduction/purpose: In this research, the influence of different turbulence models on the aerodynamic drag prediction of a generic spin-stabilized projectile was analyzed. The turbulence models chosen for investigation were one-equation Spalart-Allmaras, two-equation models Standard k-e, Realizable k-e, Standard k-o and SST k-o. The special sniper projectile M118 was selected for the study. Methods: The flows around the projectile were numerically simulated using RANS equations intergrated into ANSYS Fluent software with different turbulence models. The numerical simulation was carried out at various Mach numbers to study the effect of turbulence models on the projectile aerodynamic drag prediction. The computational results were compared to the available experimental data to evaluate the ability of the turbulence models. Results: The research results have shown that the turbulence models significantly affect the numerical simulation results. The Spalart-Allmaras turbulence model performs better than other models in the subsonic flow regime. The Standard k-e, Realizable k-e and SST k-o models perform better than other models in the supersonic flow regime. Conclusion: Computational Fluid Dynamics is a powerful tool to analyze the aerodynamics of flying bodies. By appropriately selecting turbulence models, the flow around flying bodies can be accurately investigated. In the case of generic ogive-cylinder-boattail projectiles, on the one hand, the Spalart-Allmaras model is suitable for subsonic flow, and the Standard k-e, Realizable k-e and SST k-o models are recommended for the supersonic flight regime, on the other hand. |
| format | Article |
| id | doaj-art-e29f89b5cf664827b29845dab322aa21 |
| institution | Kabale University |
| issn | 0042-8469 2217-4753 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | University of Defence in Belgrade |
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| series | Vojnotehnički Glasnik |
| spelling | doaj-art-e29f89b5cf664827b29845dab322aa212025-02-07T10:00:49ZengUniversity of Defence in BelgradeVojnotehnički Glasnik0042-84692217-47532025-01-0173111513510.5937/vojtehg73-54634A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectileQuang Tuan Nguyen0https://orcid.org/0000-0002-7741-8232Le Quy Don Technical University, Faculty of Special Equipment, Hanoi, Socialist Republic of VietnamIntroduction/purpose: In this research, the influence of different turbulence models on the aerodynamic drag prediction of a generic spin-stabilized projectile was analyzed. The turbulence models chosen for investigation were one-equation Spalart-Allmaras, two-equation models Standard k-e, Realizable k-e, Standard k-o and SST k-o. The special sniper projectile M118 was selected for the study. Methods: The flows around the projectile were numerically simulated using RANS equations intergrated into ANSYS Fluent software with different turbulence models. The numerical simulation was carried out at various Mach numbers to study the effect of turbulence models on the projectile aerodynamic drag prediction. The computational results were compared to the available experimental data to evaluate the ability of the turbulence models. Results: The research results have shown that the turbulence models significantly affect the numerical simulation results. The Spalart-Allmaras turbulence model performs better than other models in the subsonic flow regime. The Standard k-e, Realizable k-e and SST k-o models perform better than other models in the supersonic flow regime. Conclusion: Computational Fluid Dynamics is a powerful tool to analyze the aerodynamics of flying bodies. By appropriately selecting turbulence models, the flow around flying bodies can be accurately investigated. In the case of generic ogive-cylinder-boattail projectiles, on the one hand, the Spalart-Allmaras model is suitable for subsonic flow, and the Standard k-e, Realizable k-e and SST k-o models are recommended for the supersonic flight regime, on the other hand.https://scindeks.ceon.rs/article.aspx?artid=0042-84692501115Nturbulence modelsansys fluentspin-stabilized projectilessubsonic flowsupersonic flight regime |
| spellingShingle | Quang Tuan Nguyen A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectile Vojnotehnički Glasnik turbulence models ansys fluent spin-stabilized projectiles subsonic flow supersonic flight regime |
| title | A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectile |
| title_full | A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectile |
| title_fullStr | A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectile |
| title_full_unstemmed | A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectile |
| title_short | A comparative study of turbulence models for predicting the aerodynamic drag of a spin-stabilized projectile |
| title_sort | comparative study of turbulence models for predicting the aerodynamic drag of a spin stabilized projectile |
| topic | turbulence models ansys fluent spin-stabilized projectiles subsonic flow supersonic flight regime |
| url | https://scindeks.ceon.rs/article.aspx?artid=0042-84692501115N |
| work_keys_str_mv | AT quangtuannguyen acomparativestudyofturbulencemodelsforpredictingtheaerodynamicdragofaspinstabilizedprojectile AT quangtuannguyen comparativestudyofturbulencemodelsforpredictingtheaerodynamicdragofaspinstabilizedprojectile |