Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud
| Autor: | Tarik Azzam, Hamid Oualli, Kamel Azzouz, Smaine Kouidri, Michael Pereira, Florent Ravelet, Farid Bakir |
|---|---|
| Přispěvatelé: | Laboratoire d'Ingénierie des Fluides et des Systèmes Énergétiques (LIFSE), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Valeo.ai, VALEO, École Militaire Polytechnique [Alger] (EMP), Ecole Militaire Polytechnique [Alger] (EMP), Ministère de l'Enseignement Supérieur et de la Recherche Scientifique [Algérie] (MESRS)-Ministère de la Défense Nationale [Algérie] |
| Rok vydání: | 2021 |
| Předmět: |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Leakage flow rate Materials science Science QC1-999 Airflow Flow (psychology) General Physics and Astronomy 02 engineering and technology Astrophysics 01 natural sciences Article 010305 fluids & plasmas 0203 mechanical engineering 0103 physical sciences axial flow fan Shroud ComputingMilieux_MISCELLANEOUS business.industry Physics Rotating shroud leakage flow rate air injection Rotational speed Aerodynamics Mechanics Improved axial flow fan hollow blade QB460-466 020303 mechanical engineering & transports Axial compressor rotating shroud Air conditioning Axial flow fan Air injection Hollow blade CFD business Mécanique: Mécanique des fluides [Sciences de l'ingénieur] Secondary air injection |
| Zdroj: | Entropy, Vol 23, Iss 877, p 877 (2021) Entropy Volume 23 Issue 7 Proceedings of ICCHMT 2021 13th International Conference on Computational Heat Mass and Momentum Transfer (ICCHMT 2021) 13th International Conference on Computational Heat Mass and Momentum Transfer (ICCHMT 2021), 2021, Paris (on line), France Entropy, MDPI, 2021, 23, ⟨10.3390/e23070877⟩ |
| ISSN: | 1099-4300 |
| Popis: | 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%). |
| Databáze: | OpenAIRE |
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