Numerical Aerodynamic Evaluation and Noise Investigation of a Bladeless Fan
Publish place: Journal of Applied Fluid Mechanics، Vol: 8، Issue: 1
Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JAFM-8-1_014
تاریخ نمایه سازی: 5 بهمن 1400
Abstract:
Bladeless fan is a novel fan type that has no observable impeller, usually used for domestic applications. Numerical investigation of a Bladeless fan via Finite Volume Method was carried out in this study. The fan was placed in center of a ۴×۲×۲m room and ۴۷۳ Eppler airfoil profile was used as cross section of the fan. Performance and noise level of the fan by solving continuity and momentum equations as well as noise equations of Broadband Noise Source (BNS) and Ffowcs Williams and Hawkings (FW-H) in both steady state and unsteady conditions were studied. Flow increase ratio of the fan was captured. Furthermore, BNS method could find outlet slit of the air as the main source of the noise generation. In order to validation of aeroacousticcode results, a simulation of noise for NACA ۰۰۱۲ airfoil via FW-H method was compared to experimental results and good agreement was obtained.
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Authors
M. Jafari
Center of excellence in energy conversion, School of mechanical engineering, Sharif University of technology, Tehran, Iran
H. Afshin
Center of excellence in energy conversion, School of mechanical engineering, Sharif University of technology, Tehran, Iran
B. Farhanieh
Center of excellence in energy conversion, School of mechanical engineering, Sharif University of technology, Tehran, Iran
H. Bozorgasareh
Center of excellence in energy conversion, School of mechanical engineering, Sharif University of technology, Tehran, Iran