Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow
In aero-engines, a secondary air system is used to cool the rotor discs and seal cavities between rotor and stator parts. The pressure loss caused by bleed air can be effectively reduced by setting the finned vortex reducer. Thus, the bleed system design can be optimized by researching the flow stru...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/10/7/655 |
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| author | Jian He Xiang Luo Yang Bai An Song Tao Yang |
| author_facet | Jian He Xiang Luo Yang Bai An Song Tao Yang |
| author_sort | Jian He |
| collection | DOAJ |
| description | In aero-engines, a secondary air system is used to cool the rotor discs and seal cavities between rotor and stator parts. The pressure loss caused by bleed air can be effectively reduced by setting the finned vortex reducer. Thus, the bleed system design can be optimized by researching the flow structure and pressure loss of each section in the cavity with a finned vortex reducer. In this study, the influence of different installation positions of a finned vortex reducer on the pressure loss characteristics was investigated through experimental and numerical simulation methods, focusing on the radial inflow of the secondary air system. The results indicate that the inlet and outlet positions of the fins affect the flow structure in the cavity. The aerodynamic parameters (rotational Reynolds number <i>Re<sub>Φ</sub></i> and mass flow rate coefficient <i>C<sub>w</sub></i>), together with the inlet and outlet radii of the fins, influence the pressure loss in the cavity. Considering the swirl ratio β constrained by the fins, a pressure loss model was established, which showed good agreement with the experimentally measured pressure loss. This model reflects the impact of the inlet and outlet positions of the fins on the pressure loss characteristics. |
| first_indexed | 2024-03-11T01:24:34Z |
| format | Article |
| id | doaj.art-7f7e99df90ae4343ae5c289933d9394a |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-11T01:24:34Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-7f7e99df90ae4343ae5c289933d9394a2023-11-18T17:51:23ZengMDPI AGAerospace2226-43102023-07-0110765510.3390/aerospace10070655Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial InflowJian He0Xiang Luo1Yang Bai2An Song3Tao Yang4School of Energy and Power Engineering, Beihang University, Beijing 100191, ChinaResearch Institute of Aero-Engine, Beihang University, Beijing 100191, ChinaResearch Institute of Aero-Engine, Beihang University, Beijing 100191, ChinaResearch Institute of Aero-Engine, Beihang University, Beijing 100191, ChinaResearch Institute of Aero-Engine, Beihang University, Beijing 100191, ChinaIn aero-engines, a secondary air system is used to cool the rotor discs and seal cavities between rotor and stator parts. The pressure loss caused by bleed air can be effectively reduced by setting the finned vortex reducer. Thus, the bleed system design can be optimized by researching the flow structure and pressure loss of each section in the cavity with a finned vortex reducer. In this study, the influence of different installation positions of a finned vortex reducer on the pressure loss characteristics was investigated through experimental and numerical simulation methods, focusing on the radial inflow of the secondary air system. The results indicate that the inlet and outlet positions of the fins affect the flow structure in the cavity. The aerodynamic parameters (rotational Reynolds number <i>Re<sub>Φ</sub></i> and mass flow rate coefficient <i>C<sub>w</sub></i>), together with the inlet and outlet radii of the fins, influence the pressure loss in the cavity. Considering the swirl ratio β constrained by the fins, a pressure loss model was established, which showed good agreement with the experimentally measured pressure loss. This model reflects the impact of the inlet and outlet positions of the fins on the pressure loss characteristics.https://www.mdpi.com/2226-4310/10/7/655radial inflowfinned vortex reducerswirl ratiototal pressure loss |
| spellingShingle | Jian He Xiang Luo Yang Bai An Song Tao Yang Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow Aerospace radial inflow finned vortex reducer swirl ratio total pressure loss |
| title | Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow |
| title_full | Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow |
| title_fullStr | Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow |
| title_full_unstemmed | Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow |
| title_short | Experimental and Numerical Investigation on Finned Vortex Reducer in a Rotating Cavity with a Radial Inflow |
| title_sort | experimental and numerical investigation on finned vortex reducer in a rotating cavity with a radial inflow |
| topic | radial inflow finned vortex reducer swirl ratio total pressure loss |
| url | https://www.mdpi.com/2226-4310/10/7/655 |
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