Influence of a rough surface on the aerodynamic characteristics of a rotating cylinder
The article considers the influence of the relative roughness of a cylindrical blade on aerodynamic characteristics. It is known that the operation basis of blades under consideration is the Magnus effect, which is characterized by appearance of a lifting force (Magnus force), when the cyli...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Academician Ye.A. Buketov Karaganda University
2021-09-01
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| Series: | Қарағанды университетінің хабаршысы. Физика сериясы |
| Online Access: | https://physics-vestnik.ksu.kz/apart/2021-103-3/06.pdf |
| _version_ | 1797686242589016064 |
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| author | N.K. Tanasheva A.R. Bakhtybekova A.Zh. Tleubergenova L.L. Minkov S.A. Bolegenova N.N. Shuyushbaeva B.A. Toktarbaev |
| author_facet | N.K. Tanasheva A.R. Bakhtybekova A.Zh. Tleubergenova L.L. Minkov S.A. Bolegenova N.N. Shuyushbaeva B.A. Toktarbaev |
| author_sort | N.K. Tanasheva |
| collection | DOAJ |
| description | The article considers the influence of the relative roughness of a cylindrical blade on aerodynamic characteristics. It is known that the operation basis of blades under consideration is the Magnus effect, which is characterized by appearance of a lifting force (Magnus force), when the cylinders rotate in a transverse flow. This force is used to rotate the wind wheel, similar to lifting force, but can have a much larger value when selecting optimal conditions, both geometric and aerodynamic. The authors conducted a comparative analysis of cylinder layout with a relative roughness (0.005 ÷ 0.02). Experimental studies of aerodynamics process of rotating cylinders were carried out in the aerodynamic laboratory using the T-1-M wind tunnel at an air flow value of 5 to 15 m/s. Graphs of dependences of rotating cylinder's lifting force and drag force on the changing air flow velocity and on relative roughness, k/d, are obtained. For further study experimental cylinder layout’s aerodynamic parameters, the most optimal is the variant with a relative roughness value of 0.02, which had high indicators, was selected. In the course of experimental studies, graphs of the dependence of the values of lift and drag force on the angles of attack of a single rotating cylinder with a rough surface on the speed and angle of attack of the wind flow (0°, 30° and 60°) were obtained. It is established that the effective angle of attack is 0°, at which aerodynamic characteristics’s maximum values were obtained. |
| first_indexed | 2024-03-12T01:03:32Z |
| format | Article |
| id | doaj.art-f732a6df26fb4fcfbfa6d66350fe5c17 |
| institution | Directory Open Access Journal |
| issn | 2518-7198 2663-5089 |
| language | English |
| last_indexed | 2024-03-12T01:03:32Z |
| publishDate | 2021-09-01 |
| publisher | Academician Ye.A. Buketov Karaganda University |
| record_format | Article |
| series | Қарағанды университетінің хабаршысы. Физика сериясы |
| spelling | doaj.art-f732a6df26fb4fcfbfa6d66350fe5c172023-09-14T08:51:45ZengAcademician Ye.A. Buketov Karaganda UniversityҚарағанды университетінің хабаршысы. Физика сериясы2518-71982663-50892021-09-011033525910.31489/2021Ph3/52-59Influence of a rough surface on the aerodynamic characteristics of a rotating cylinderN.K. TanashevaA.R. BakhtybekovaA.Zh. TleubergenovaL.L. MinkovS.A. BolegenovaN.N. ShuyushbaevaB.A. Toktarbaev The article considers the influence of the relative roughness of a cylindrical blade on aerodynamic characteristics. It is known that the operation basis of blades under consideration is the Magnus effect, which is characterized by appearance of a lifting force (Magnus force), when the cylinders rotate in a transverse flow. This force is used to rotate the wind wheel, similar to lifting force, but can have a much larger value when selecting optimal conditions, both geometric and aerodynamic. The authors conducted a comparative analysis of cylinder layout with a relative roughness (0.005 ÷ 0.02). Experimental studies of aerodynamics process of rotating cylinders were carried out in the aerodynamic laboratory using the T-1-M wind tunnel at an air flow value of 5 to 15 m/s. Graphs of dependences of rotating cylinder's lifting force and drag force on the changing air flow velocity and on relative roughness, k/d, are obtained. For further study experimental cylinder layout’s aerodynamic parameters, the most optimal is the variant with a relative roughness value of 0.02, which had high indicators, was selected. In the course of experimental studies, graphs of the dependence of the values of lift and drag force on the angles of attack of a single rotating cylinder with a rough surface on the speed and angle of attack of the wind flow (0°, 30° and 60°) were obtained. It is established that the effective angle of attack is 0°, at which aerodynamic characteristics’s maximum values were obtained.https://physics-vestnik.ksu.kz/apart/2021-103-3/06.pdf |
| spellingShingle | N.K. Tanasheva A.R. Bakhtybekova A.Zh. Tleubergenova L.L. Minkov S.A. Bolegenova N.N. Shuyushbaeva B.A. Toktarbaev Influence of a rough surface on the aerodynamic characteristics of a rotating cylinder Қарағанды университетінің хабаршысы. Физика сериясы |
| title | Influence of a rough surface on the aerodynamic characteristics of a rotating cylinder |
| title_full | Influence of a rough surface on the aerodynamic characteristics of a rotating cylinder |
| title_fullStr | Influence of a rough surface on the aerodynamic characteristics of a rotating cylinder |
| title_full_unstemmed | Influence of a rough surface on the aerodynamic characteristics of a rotating cylinder |
| title_short | Influence of a rough surface on the aerodynamic characteristics of a rotating cylinder |
| title_sort | influence of a rough surface on the aerodynamic characteristics of a rotating cylinder |
| url | https://physics-vestnik.ksu.kz/apart/2021-103-3/06.pdf |
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