A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model Experiment
The demand for new propeller designs has increased alongside the development of new technology, such as urban aircraft and large unmanned aerial vehicles. In order to experimentally identify the performance of a propeller, a wind tunnel that provides the operating flow is essential. However, in the...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/9/10/559 |
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| author | Yeong-Ju Go Joon-Hwan Bae Jaeha Ryi Jong-Soo Choi Chung-Ryeol Lee |
| author_facet | Yeong-Ju Go Joon-Hwan Bae Jaeha Ryi Jong-Soo Choi Chung-Ryeol Lee |
| author_sort | Yeong-Ju Go |
| collection | DOAJ |
| description | The demand for new propeller designs has increased alongside the development of new technology, such as urban aircraft and large unmanned aerial vehicles. In order to experimentally identify the performance of a propeller, a wind tunnel that provides the operating flow is essential. However, in the case of a meter class or larger propeller, a large wind tunnel is required and the related equipment becomes heavy; therefore, it is difficult to implement in reality. For this reason, propeller studies have been conducted via reduced models. In this case, it is necessary to investigate the different performance outputs between the full- and model-scale propellers due to the size difference. In the current study, a method is proposed to investigate the difference in the aerodynamic performance caused by the difference in propeller scale using VLM and RANS calculations, and the differences are analyzed. The wind tunnel test also verified the propeller performance prediction method. The boundary of aerodynamic performance independent of the Reynolds number could be predicted through the VLM based on the ideal fluid assumption. From the RANS calculations, it was possible to present the difference in the aerodynamic performance when propellers of the same geometry with different ratios were operated using different Reynolds numbers. It was confirmed that each numerical method matched well with the wind tunnel test results in the range of the advance ratio that produced the maximum efficiency, and from the results, it was possible to observe the change in aerodynamic performance that differed according to the scale change. |
| first_indexed | 2024-03-09T20:57:04Z |
| format | Article |
| id | doaj.art-0c2e55a95d534470918a8c078232ab71 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T20:57:04Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-0c2e55a95d534470918a8c078232ab712023-11-23T22:18:20ZengMDPI AGAerospace2226-43102022-09-0191055910.3390/aerospace9100559A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model ExperimentYeong-Ju Go0Joon-Hwan Bae1Jaeha Ryi2Jong-Soo Choi3Chung-Ryeol Lee4Department of Aerospace Engineering, Chungnam National University, Daejeon 34134, KoreaKorea Aerospace Research Institute, Daejeon 34133, KoreaDepartment of Aerospace Engineering, Chungnam National University, Daejeon 34134, KoreaDepartment of Aerospace Engineering, Chungnam National University, Daejeon 34134, KoreaAgency for Defense Development, Daejeon 31486, KoreaThe demand for new propeller designs has increased alongside the development of new technology, such as urban aircraft and large unmanned aerial vehicles. In order to experimentally identify the performance of a propeller, a wind tunnel that provides the operating flow is essential. However, in the case of a meter class or larger propeller, a large wind tunnel is required and the related equipment becomes heavy; therefore, it is difficult to implement in reality. For this reason, propeller studies have been conducted via reduced models. In this case, it is necessary to investigate the different performance outputs between the full- and model-scale propellers due to the size difference. In the current study, a method is proposed to investigate the difference in the aerodynamic performance caused by the difference in propeller scale using VLM and RANS calculations, and the differences are analyzed. The wind tunnel test also verified the propeller performance prediction method. The boundary of aerodynamic performance independent of the Reynolds number could be predicted through the VLM based on the ideal fluid assumption. From the RANS calculations, it was possible to present the difference in the aerodynamic performance when propellers of the same geometry with different ratios were operated using different Reynolds numbers. It was confirmed that each numerical method matched well with the wind tunnel test results in the range of the advance ratio that produced the maximum efficiency, and from the results, it was possible to observe the change in aerodynamic performance that differed according to the scale change.https://www.mdpi.com/2226-4310/9/10/559aircraft propellerscale effectReynolds numbervortex lattice method (VLM)Reynolds–Averaged Navier–Stokes (RANS)wind tunnel test |
| spellingShingle | Yeong-Ju Go Joon-Hwan Bae Jaeha Ryi Jong-Soo Choi Chung-Ryeol Lee A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model Experiment Aerospace aircraft propeller scale effect Reynolds number vortex lattice method (VLM) Reynolds–Averaged Navier–Stokes (RANS) wind tunnel test |
| title | A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model Experiment |
| title_full | A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model Experiment |
| title_fullStr | A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model Experiment |
| title_full_unstemmed | A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model Experiment |
| title_short | A Study on the Scale Effect According to the Reynolds Number in Propeller Flow Analysis and a Model Experiment |
| title_sort | study on the scale effect according to the reynolds number in propeller flow analysis and a model experiment |
| topic | aircraft propeller scale effect Reynolds number vortex lattice method (VLM) Reynolds–Averaged Navier–Stokes (RANS) wind tunnel test |
| url | https://www.mdpi.com/2226-4310/9/10/559 |
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