Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine Performance
Wind turbines without pitch control are more preferable from economical point of view but aerodynamic stall affects them more and after a critical wind speed local boundary layer separation occurs. Consequently, their power production is relatively low. In this study, air ducts added on the blade an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/14/3618 |
| _version_ | 1797562446778466304 |
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| author | Cemil Yigit |
| author_facet | Cemil Yigit |
| author_sort | Cemil Yigit |
| collection | DOAJ |
| description | Wind turbines without pitch control are more preferable from economical point of view but aerodynamic stall affects them more and after a critical wind speed local boundary layer separation occurs. Consequently, their power production is relatively low. In this study, air ducts added on the blade and using the airflow from them the kinetic energy of the low-momentum fluid behind the surface was increased and delay of separation of the boundary layer from the surface was examined The Response Surface Optimization method was utilized in order to get the best possible design under the constraints and targets arranged for the parameters termed the diameter, slope, number and angle of attack of the air ducts. By using computational fluid dynamics analysis, optimum parameter values were obtained and air-ducted and air-duct free blade designs were compared. An improvement in power coefficient between 3.4–4.4% depending on wind speed was achieved with the new design. Due to increase in viscous forces, more power from the rotor obtained by opening air ducts up to a critical number. However, the results showed that after the critical number of air duct addition of more duct on the blade reduced the power coefficient. |
| first_indexed | 2024-03-10T18:29:18Z |
| format | Article |
| id | doaj.art-14d240fe1a33407cb91cbfa619c2f53e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T18:29:18Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-14d240fe1a33407cb91cbfa619c2f53e2023-11-20T06:44:27ZengMDPI AGEnergies1996-10732020-07-011314361810.3390/en13143618Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine PerformanceCemil Yigit0Mechanical Engineering Department, Sakarya University, Sakarya 54187, TurkeyWind turbines without pitch control are more preferable from economical point of view but aerodynamic stall affects them more and after a critical wind speed local boundary layer separation occurs. Consequently, their power production is relatively low. In this study, air ducts added on the blade and using the airflow from them the kinetic energy of the low-momentum fluid behind the surface was increased and delay of separation of the boundary layer from the surface was examined The Response Surface Optimization method was utilized in order to get the best possible design under the constraints and targets arranged for the parameters termed the diameter, slope, number and angle of attack of the air ducts. By using computational fluid dynamics analysis, optimum parameter values were obtained and air-ducted and air-duct free blade designs were compared. An improvement in power coefficient between 3.4–4.4% depending on wind speed was achieved with the new design. Due to increase in viscous forces, more power from the rotor obtained by opening air ducts up to a critical number. However, the results showed that after the critical number of air duct addition of more duct on the blade reduced the power coefficient.https://www.mdpi.com/1996-1073/13/14/3618power coefficientcomputational fluid dynamicsresponse surface optimizationblade designhorizontal axis wind turbine |
| spellingShingle | Cemil Yigit Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine Performance Energies power coefficient computational fluid dynamics response surface optimization blade design horizontal axis wind turbine |
| title | Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine Performance |
| title_full | Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine Performance |
| title_fullStr | Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine Performance |
| title_full_unstemmed | Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine Performance |
| title_short | Effect of Air-Ducted Blade Design on Horizontal Axis Wind Turbine Performance |
| title_sort | effect of air ducted blade design on horizontal axis wind turbine performance |
| topic | power coefficient computational fluid dynamics response surface optimization blade design horizontal axis wind turbine |
| url | https://www.mdpi.com/1996-1073/13/14/3618 |
| work_keys_str_mv | AT cemilyigit effectofairductedbladedesignonhorizontalaxiswindturbineperformance |