Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup>
New propulsive concepts, such as boundary layer ingestion, involve stronger interactions between the engine and its environment, and are thus more complex flows compared to classical architectures. Usual turbomachinery design tools are inadequate, and new numerical methodologies are needed to accura...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-08-01
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| Series: | International Journal of Turbomachinery, Propulsion and Power |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-186X/4/3/29 |
| _version_ | 1819054552258707456 |
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| author | Emmanuel Benichou Guillaume Dufour Yannick Bousquet Nicolas Binder Aurélie Ortolan Xavier Carbonneau |
| author_facet | Emmanuel Benichou Guillaume Dufour Yannick Bousquet Nicolas Binder Aurélie Ortolan Xavier Carbonneau |
| author_sort | Emmanuel Benichou |
| collection | DOAJ |
| description | New propulsive concepts, such as boundary layer ingestion, involve stronger interactions between the engine and its environment, and are thus more complex flows compared to classical architectures. Usual turbomachinery design tools are inadequate, and new numerical methodologies are needed to accurately predict the engine performance with affordable CPU resources. The present paper examines the relevance of a reduced-order modeling approach—the body force modeling (BFM) method—for a low-speed cooling fan with inflow distortion. The formulation itself accounts for the blade metal blockage and compressibility effects, and it relies on a semiempirical loss model, independent of computational fluid dynamics (CFD) calibration. The BFM results obtained in the present work are assessed against full-annulus unsteady Reynolds-averaged Navier-Stokes (URANS) results and experiments. The comparison shows that the BFM approach successfully quantifies the fan stage performance. Furthermore, the distortion transfer across the stage is examined and the flow patterns observed are found to be the same as in the URANS results and in the measurements. Hence, this methodology, coming at a low CPU cost, is well-adapted to the early design phase of an innovative propulsion system. |
| first_indexed | 2024-12-21T12:53:26Z |
| format | Article |
| id | doaj.art-b26199c65d744a4a90800024ca14ace7 |
| institution | Directory Open Access Journal |
| issn | 2504-186X |
| language | English |
| last_indexed | 2024-12-21T12:53:26Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Turbomachinery, Propulsion and Power |
| spelling | doaj.art-b26199c65d744a4a90800024ca14ace72022-12-21T19:03:25ZengMDPI AGInternational Journal of Turbomachinery, Propulsion and Power2504-186X2019-08-01432910.3390/ijtpp4030029ijtpp4030029Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup>Emmanuel Benichou0Guillaume Dufour1Yannick Bousquet2Nicolas Binder3Aurélie Ortolan4Xavier Carbonneau5ISAE-SUPAERO, Université de Toulouse, 31013 Toulouse, FranceISAE-SUPAERO, Université de Toulouse, 31013 Toulouse, FranceISAE-SUPAERO, Université de Toulouse, 31013 Toulouse, FranceISAE-SUPAERO, Université de Toulouse, 31013 Toulouse, FranceALTRAN Technologies, 31700 Blagnac, FranceISAE-SUPAERO, Université de Toulouse, 31013 Toulouse, FranceNew propulsive concepts, such as boundary layer ingestion, involve stronger interactions between the engine and its environment, and are thus more complex flows compared to classical architectures. Usual turbomachinery design tools are inadequate, and new numerical methodologies are needed to accurately predict the engine performance with affordable CPU resources. The present paper examines the relevance of a reduced-order modeling approach—the body force modeling (BFM) method—for a low-speed cooling fan with inflow distortion. The formulation itself accounts for the blade metal blockage and compressibility effects, and it relies on a semiempirical loss model, independent of computational fluid dynamics (CFD) calibration. The BFM results obtained in the present work are assessed against full-annulus unsteady Reynolds-averaged Navier-Stokes (URANS) results and experiments. The comparison shows that the BFM approach successfully quantifies the fan stage performance. Furthermore, the distortion transfer across the stage is examined and the flow patterns observed are found to be the same as in the URANS results and in the measurements. Hence, this methodology, coming at a low CPU cost, is well-adapted to the early design phase of an innovative propulsion system.https://www.mdpi.com/2504-186X/4/3/29Boundary Layer IngestionInlet DistortionBody Force ModelingUnsteady RANS |
| spellingShingle | Emmanuel Benichou Guillaume Dufour Yannick Bousquet Nicolas Binder Aurélie Ortolan Xavier Carbonneau Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup> International Journal of Turbomachinery, Propulsion and Power Boundary Layer Ingestion Inlet Distortion Body Force Modeling Unsteady RANS |
| title | Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup> |
| title_full | Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup> |
| title_fullStr | Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup> |
| title_full_unstemmed | Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup> |
| title_short | Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow <sup>†</sup> |
| title_sort | body force modeling of the aerodynamics of a low speed fan under distorted inflow sup † sup |
| topic | Boundary Layer Ingestion Inlet Distortion Body Force Modeling Unsteady RANS |
| url | https://www.mdpi.com/2504-186X/4/3/29 |
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