Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump
A transonic hump with a Mach number (M∞) of 0.875 was utilized to compare the prediction capabilities of RANS, URANS, IDDES, and IDDES-SLA for shock-induced separation. The results matched the experimental data concerning pressure, friction coefficients, velocity distribution, and other parameters....
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2024-11-01
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| author | Miao Zhang Zhuoyue Tian Songxiang Tang Ziyan Wei Jie Li |
| author_facet | Miao Zhang Zhuoyue Tian Songxiang Tang Ziyan Wei Jie Li |
| author_sort | Miao Zhang |
| collection | DOAJ |
| description | A transonic hump with a Mach number (M∞) of 0.875 was utilized to compare the prediction capabilities of RANS, URANS, IDDES, and IDDES-SLA for shock-induced separation. The results matched the experimental data concerning pressure, friction coefficients, velocity distribution, and other parameters. The improved delayed detached eddy simulation with a modified sub-grid scale (IDDES-SLA) method performed the best amongst tested numerical methods, demonstrating differences of 1.3% and 4.1% from the experimental results for separation and reattachment locations, respectively. The primary difference between IDDES and IDDES-SLA is reflected in detailed data, such as velocity and high-frequency characteristics, although both methods exhibit similar simulation capabilities for the main structural features of the flow field. The POD and PSD analyses of the flow field results demonstrated that the IDDES-SLA method was more capable of resolving higher modes of flow field. |
| format | Article |
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| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-1ca79892f6224a77aa67f4af79fcbe132024-11-26T17:48:03ZengMDPI AGApplied Sciences2076-34172024-11-0114221023410.3390/app142210234Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric HumpMiao Zhang0Zhuoyue Tian1Songxiang Tang2Ziyan Wei3Jie Li4COMAC Shanghai Aircraft Design and Research Institute, Shanghai 201210, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, ChinaA transonic hump with a Mach number (M∞) of 0.875 was utilized to compare the prediction capabilities of RANS, URANS, IDDES, and IDDES-SLA for shock-induced separation. The results matched the experimental data concerning pressure, friction coefficients, velocity distribution, and other parameters. The improved delayed detached eddy simulation with a modified sub-grid scale (IDDES-SLA) method performed the best amongst tested numerical methods, demonstrating differences of 1.3% and 4.1% from the experimental results for separation and reattachment locations, respectively. The primary difference between IDDES and IDDES-SLA is reflected in detailed data, such as velocity and high-frequency characteristics, although both methods exhibit similar simulation capabilities for the main structural features of the flow field. The POD and PSD analyses of the flow field results demonstrated that the IDDES-SLA method was more capable of resolving higher modes of flow field.https://www.mdpi.com/2076-3417/14/22/10234transonic humpIDDESshock-induced separation |
| spellingShingle | Miao Zhang Zhuoyue Tian Songxiang Tang Ziyan Wei Jie Li Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump Applied Sciences transonic hump IDDES shock-induced separation |
| title | Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump |
| title_full | Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump |
| title_fullStr | Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump |
| title_full_unstemmed | Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump |
| title_short | Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump |
| title_sort | numerical methods comparison of shock induced separation on transonic axisymmetric hump |
| topic | transonic hump IDDES shock-induced separation |
| url | https://www.mdpi.com/2076-3417/14/22/10234 |
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