Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud
Axial flow fans are used in many fields in order to ensure the mass and heat transfer from air, chiefly in the heating, ventilation and air conditioning industry (HVAC). A more proper understanding of the airflow behavior through the systems is necessary to manage and optimize the fan operation. Com...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/23/7/877 |
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| author | Michaël Pereira Florent Ravelet Kamel Azzouz Tarik Azzam Hamid Oualli Smaïne Kouidri Farid Bakir |
| author_facet | Michaël Pereira Florent Ravelet Kamel Azzouz Tarik Azzam Hamid Oualli Smaïne Kouidri Farid Bakir |
| author_sort | Michaël Pereira |
| collection | DOAJ |
| description | Axial flow fans are used in many fields in order to ensure the mass and heat transfer from air, chiefly in the heating, ventilation and air conditioning industry (HVAC). A more proper understanding of the airflow behavior through the systems is necessary to manage and optimize the fan operation. Computational fluid dynamics (CFD) represents a real tool providing the ability to access flow structures in areas that measuring equipment cannot reach. Reducing the leakage flow rate, inherent in operation, by synthetic-jet techniques improves performance. This paper presents the CFD results performed on a hollow blade fan developed by our team. The leakage flow is controlled by blowing air from 16 designated circular holes and arranged on the fan shroud. We discuss the results for two rotational speeds (1000 and 2000 rpm) and two injection rates (400 and 800 L/min). The numerical results consistent with the experimental show, for the low rotation speed and high injection ratio, significant gains in power (53%), torque (80%) and leakage flow rate (80%). |
| first_indexed | 2024-03-10T09:40:08Z |
| format | Article |
| id | doaj.art-5a7676abf0294d82bf31a25d1567294d |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-10T09:40:08Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-5a7676abf0294d82bf31a25d1567294d2023-11-22T03:45:12ZengMDPI AGEntropy1099-43002021-07-0123787710.3390/e23070877Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating ShroudMichaël Pereira0Florent Ravelet1Kamel Azzouz2Tarik Azzam3Hamid Oualli4Smaïne Kouidri5Farid Bakir6Arts et Métiers, Institute of Technology, CNAM, LIFSE, HESAM University, 75013 Paris, FranceArts et Métiers, Institute of Technology, CNAM, LIFSE, HESAM University, 75013 Paris, FranceValeo Thermal System, Advanced Engineering, Thermal & Thermodynamics, 78322 Le Mesnil-Saint-Denis, FranceEcole Militaire Polytechnique (EMP), Laboratoire de Mécanique des Fluides, 16111 Algiers, AlgeriaEcole Militaire Polytechnique (EMP), Laboratoire de Mécanique des Fluides, 16111 Algiers, AlgeriaArts et Métiers, Institute of Technology, CNAM, LIFSE, HESAM University, 75013 Paris, FranceArts et Métiers, Institute of Technology, CNAM, LIFSE, HESAM University, 75013 Paris, FranceAxial flow fans are used in many fields in order to ensure the mass and heat transfer from air, chiefly in the heating, ventilation and air conditioning industry (HVAC). A more proper understanding of the airflow behavior through the systems is necessary to manage and optimize the fan operation. Computational fluid dynamics (CFD) represents a real tool providing the ability to access flow structures in areas that measuring equipment cannot reach. Reducing the leakage flow rate, inherent in operation, by synthetic-jet techniques improves performance. This paper presents the CFD results performed on a hollow blade fan developed by our team. The leakage flow is controlled by blowing air from 16 designated circular holes and arranged on the fan shroud. We discuss the results for two rotational speeds (1000 and 2000 rpm) and two injection rates (400 and 800 L/min). The numerical results consistent with the experimental show, for the low rotation speed and high injection ratio, significant gains in power (53%), torque (80%) and leakage flow rate (80%).https://www.mdpi.com/1099-4300/23/7/877axial flow fanCFDleakage flow rateair injectionhollow bladerotating shroud |
| spellingShingle | Michaël Pereira Florent Ravelet Kamel Azzouz Tarik Azzam Hamid Oualli Smaïne Kouidri Farid Bakir Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud Entropy axial flow fan CFD leakage flow rate air injection hollow blade rotating shroud |
| title | Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud |
| title_full | Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud |
| title_fullStr | Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud |
| title_full_unstemmed | Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud |
| title_short | Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud |
| title_sort | improved aerodynamics of a hollow blade axial flow fan by controlling the leakage flow rate by air injection at the rotating shroud |
| topic | axial flow fan CFD leakage flow rate air injection hollow blade rotating shroud |
| url | https://www.mdpi.com/1099-4300/23/7/877 |
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