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Journal of Applied Fluid Mechanics، جلد ۸، شماره ۱، صفحات ۱۳۳-۱۴۲
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عنوان انگلیسی Numerical Aerodynamic Evaluation and Noise Investigation of a Bladeless Fan
چکیده انگلیسی مقاله 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 4×2×2m room and 473 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 0012 airfoil via FW-H method was compared to experimental results and good agreement was obtained.
کلیدواژه‌های انگلیسی مقاله Bladeless Fan, BNS &,amp FW, Computational fluid dynamics, Airfoil, H Noise Formulations, Numerical simulation
نویسندگان مقاله 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

نشانی اینترنتی https://www.jafmonline.net/article_1489_cbd4e8d00a22074d809836501340662a.pdf
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