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Numerical aerodynamic evaluation and noise investigation of a Bladeless fan
, Article Journal of Applied Fluid Mechanics ; Volume 8, Issue 1 , January , 2015 , Pages 133-142 ; 17353572 (ISSN) ; Afshin, H ; Farhanieh, B ; Bozorgasareh, H ; Sharif University of Technology
Isfahan University of Technology
2015
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 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...
Experimental and numerical investigation of a 60cm diameter bladeless fan
, Article Journal of Applied Fluid Mechanics ; Volume 9, Issue 2 , 2016 , Pages 935-944 ; 17353572 (ISSN) ; Afshin, H ; Farhanieh, B ; Bozorgasareh, H ; Sharif University of Technology
Isfahan University of Technology
Abstract
Bladeless fan is a novel type of fan with an unusual geometry and unique characteristics. This type of fan has been recently developed for domestic applications in sizes typically up to 30cm diameter. In the present study, a Bladeless fan with a diameter of 60cm was designed and constructed, in order to investigate feasibility of its usage in various industries with large dimensions. Firstly, flow field passed through this fan was studied by 3D modeling. Aerodynamic and aeroacoustic performance of the fan were considered via solving the conservation of mass and momentum equations in their unsteady form. To validate the acoustic code, NACA 0012 airfoil was simulated in a two dimension domain...