The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil
Airfoil stall and its boundary layer development are fundamental scientific issues in aircraft design. For the trailing edge stall airfoil, The transition model coupled the Mentor <i>k</i> -<i>ω</i> SST model with the disturbance amplification factor transport equation is use...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Advances in Aeronautical Science and Engineering
2019-06-01
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| Series: | Hangkong gongcheng jinzhan |
| Subjects: | |
| Online Access: | http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2018103?st=article_issue |
| _version_ | 1797988577853833216 |
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| author | Zhang Yanjun Zhao Ke Zhang Tongxin Chen Lili |
| author_facet | Zhang Yanjun Zhao Ke Zhang Tongxin Chen Lili |
| author_sort | Zhang Yanjun |
| collection | DOAJ |
| description | Airfoil stall and its boundary layer development are fundamental scientific issues in aircraft design. For the trailing edge stall airfoil, The transition model coupled the Mentor <i>k</i> -<i>ω</i> SST model with the disturbance amplification factor transport equation is used to analyze the influence of Reynolds number variation on the laminar-turbulent transition boundary layer characteristics and stall characteristics. The results show that when the Reynolds number increases, the local vorticity Reynolds number increases, the transition position moves forward and the separation bubble decreases, the flow energy dissipation decreases, and the overall surface shear effect of the airfoil increases. The kinetic energy is more abundant, the flow self-sustaining ability is enhanced, and the pressure distribution can maintain the gradient resistance of the longer distance to enhance the separation resistant ability. Therefore, the increase of the Reynolds number makes the increase of the airfoil stall angle and the lift coefficient. |
| first_indexed | 2024-04-11T08:06:23Z |
| format | Article |
| id | doaj.art-b86a4e9eb58741ff95c19b1600b9a373 |
| institution | Directory Open Access Journal |
| issn | 1674-8190 |
| language | zho |
| last_indexed | 2024-04-11T08:06:23Z |
| publishDate | 2019-06-01 |
| publisher | Editorial Department of Advances in Aeronautical Science and Engineering |
| record_format | Article |
| series | Hangkong gongcheng jinzhan |
| spelling | doaj.art-b86a4e9eb58741ff95c19b1600b9a3732022-12-22T04:35:34ZzhoEditorial Department of Advances in Aeronautical Science and EngineeringHangkong gongcheng jinzhan1674-81902019-06-0110331932910.16615/j.cnki.1674-8190.2019.03.00420190304The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of AirfoilZhang Yanjun0Zhao Ke1Zhang Tongxin2Chen Lili3The General Configuration and Aerodynamics Design and Research Department, The First Aircraft Institute, Xi'an 710089, ChinaThe General Configuration and Aerodynamics Design and Research Department, The First Aircraft Institute, Xi'an 710089, ChinaThe General Configuration and Aerodynamics Design and Research Department, The First Aircraft Institute, Xi'an 710089, ChinaThe General Configuration and Aerodynamics Design and Research Department, The First Aircraft Institute, Xi'an 710089, ChinaAirfoil stall and its boundary layer development are fundamental scientific issues in aircraft design. For the trailing edge stall airfoil, The transition model coupled the Mentor <i>k</i> -<i>ω</i> SST model with the disturbance amplification factor transport equation is used to analyze the influence of Reynolds number variation on the laminar-turbulent transition boundary layer characteristics and stall characteristics. The results show that when the Reynolds number increases, the local vorticity Reynolds number increases, the transition position moves forward and the separation bubble decreases, the flow energy dissipation decreases, and the overall surface shear effect of the airfoil increases. The kinetic energy is more abundant, the flow self-sustaining ability is enhanced, and the pressure distribution can maintain the gradient resistance of the longer distance to enhance the separation resistant ability. Therefore, the increase of the Reynolds number makes the increase of the airfoil stall angle and the lift coefficient.http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2018103?st=article_issuereynolds numberairfoil stallboundary layertransitionseparation bubbleturbulence model |
| spellingShingle | Zhang Yanjun Zhao Ke Zhang Tongxin Chen Lili The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil Hangkong gongcheng jinzhan reynolds number airfoil stall boundary layer transition separation bubble turbulence model |
| title | The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil |
| title_full | The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil |
| title_fullStr | The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil |
| title_full_unstemmed | The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil |
| title_short | The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil |
| title_sort | influence of reynolds number on boundary layer development and stall characteristics of airfoil |
| topic | reynolds number airfoil stall boundary layer transition separation bubble turbulence model |
| url | http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2018103?st=article_issue |
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