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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 印刷: 2152-5102
ISSN オンライン: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v41.i4.40
pages 337-352

Numerical Investigation of Mechanical Tabs Effect on a Turbulent Free Circular Jet

Mohammed Boulenouar
Aerospace and Propulsion Systems Laboratory, University of USTO MB, Algeria
Omar Imine
Laboratoire d'Aéronautique et Systèmes Propulsifs, Département de Génie Mécanique, Université des Sciences et de la Technologie d'Oran Mohamed Boudiaf, USTO-MB, Oran, Algérie
Noureddine Boualem
Composite Structures and Innovative Materials Laboratory (LSCMI), Mechanical Engineering Faculty University of Science and Technology Oran Mohamed Boudiaf Oran, Algeria
Tayeb Yahiaoui
Laboratoire d’Aéronautique et Systèmes Propulsive, Université des Sciences et de la Technologie d’Oran - Mohamed-Boudiaf, Algeria

要約

Numerical simulation of low Reynolds turbulent free jet issuing from circular nozzles with and without tabs, using the Shear Stress Transport (SST) k−ω model has been carried out. First, the numerical model validation has been performed by comparing computed results with Particle Image Velocimetry (PIV) measurements for the circular nozzle without tabs. The obtained results show reasonable agreement, principally for parameters such as centerline longitudinal velocity, longitudinal fluctuating velocity, and volumetric flow rate. Secondly, the tested numerical model has been applied for tabbed jet and results were compared with those of the circular jet without tabs. It is showed that the turbulent jet flow is modified by the presence of tabs. Also, it is found that the circular jet with tabs has better mixing performance compared to the circular jet without tabs. With these results, the tested numerical model can be considered as an efficient and costless mean for optimizing circular nozzle geometry for Heating Ventilation Air Conditioning (HVAC) applications.


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