A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental Validation
To reduce the computational cost, the <i>k</i>-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>ω</mi></semantics></math></inline-formula> SST turbulence model with Rotatio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/9/3/125 |
| _version_ | 1797447739199455232 |
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| author | Chaoqun Li Shuo Tang Yi Li Zihai Geng |
| author_facet | Chaoqun Li Shuo Tang Yi Li Zihai Geng |
| author_sort | Chaoqun Li |
| collection | DOAJ |
| description | To reduce the computational cost, the <i>k</i>-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>ω</mi></semantics></math></inline-formula> SST turbulence model with Rotation and Curvature correction (SST-RC) is modified to predict the drag of practical aerodynamic configurations mounted with drag-reducing riblets. In the modified model, wall <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>ω</mi></semantics></math></inline-formula> is reconstructed based on the existing experimental results and becomes a function of riblet geometry, angle of attack, position at the surface, and parameters of computational grids. The modified SST-RC model is validated by existing experimental and numerical examinations. Subsequently, a maximum error of 3.00% is achieved. Furthermore, experimental and numerical studies on a wing–body configuration are conducted in this work. The maximum error between the drag-reducing ratios obtained by numerical simulations and those of experiments is 3.21%. Analysis of numerical results demonstrates a maximum of 5.36% decline in skin friction coefficient for the model with riblets; moreover, the distribution of the pressure coefficient is also changed. |
| first_indexed | 2024-03-09T14:00:17Z |
| format | Article |
| id | doaj.art-c1a42f6262e4429e9fd9821d31f5aa95 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T14:00:17Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-c1a42f6262e4429e9fd9821d31f5aa952023-11-30T10:27:44ZengMDPI AGAerospace2226-43102022-02-019312510.3390/aerospace9030125A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental ValidationChaoqun Li0Shuo Tang1Yi Li2Zihai Geng3School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Astronautics, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Astronautics, Northwestern Polytechnical University, Xi’an 710072, ChinaChengdu Fluid Dynamics Innovation Center, Chengdu 610072, ChinaTo reduce the computational cost, the <i>k</i>-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>ω</mi></semantics></math></inline-formula> SST turbulence model with Rotation and Curvature correction (SST-RC) is modified to predict the drag of practical aerodynamic configurations mounted with drag-reducing riblets. In the modified model, wall <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>ω</mi></semantics></math></inline-formula> is reconstructed based on the existing experimental results and becomes a function of riblet geometry, angle of attack, position at the surface, and parameters of computational grids. The modified SST-RC model is validated by existing experimental and numerical examinations. Subsequently, a maximum error of 3.00% is achieved. Furthermore, experimental and numerical studies on a wing–body configuration are conducted in this work. The maximum error between the drag-reducing ratios obtained by numerical simulations and those of experiments is 3.21%. Analysis of numerical results demonstrates a maximum of 5.36% decline in skin friction coefficient for the model with riblets; moreover, the distribution of the pressure coefficient is also changed.https://www.mdpi.com/2226-4310/9/3/125flow controldrag-reducing ribletsmodified RANS methodwind tunnel experiment validation |
| spellingShingle | Chaoqun Li Shuo Tang Yi Li Zihai Geng A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental Validation Aerospace flow control drag-reducing riblets modified RANS method wind tunnel experiment validation |
| title | A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental Validation |
| title_full | A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental Validation |
| title_fullStr | A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental Validation |
| title_full_unstemmed | A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental Validation |
| title_short | A Modified RANS Model for Drag Prediction of Practical Configuration with Riblets and Experimental Validation |
| title_sort | modified rans model for drag prediction of practical configuration with riblets and experimental validation |
| topic | flow control drag-reducing riblets modified RANS method wind tunnel experiment validation |
| url | https://www.mdpi.com/2226-4310/9/3/125 |
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