NUMERICAL ANALYSIS OF THE TIP VORTEX IN AN AIR-CONDITIONER’S PROPELLER FAN
TASK Quarterly, 2006 A steady, incompressible, turbulent flow field inside a propeller fan used in an air conditioner has been analyzed numerically using the single-equation Spalart-Allmaras turbulence model.
JIABING WANG, KEQI WU
doaj
Study of the Noise Reduction Mechanism of Bionic Circular Arch Structures on the Blades of a High-Volumetric-Airflow Axial Flow Fan. [PDF]
Biomimetics (Basel)Shen C +5 more
europepmc +1 more source
Some observations about the components of transonic fan noise from narrow-band spectral analysis [PDF]
Qualitative and quantitative spectral analyses are presented that give the broadband-noise, discrete-tone, and multiple-tone properties of the noise generated by a full-scale high-bypass single-stage axial-flow transonic fan (fan B, NASA Quiet Engine ...
Saule, A. V.
core +1 more source
Influence of blade installation angle spanwise distribution on the energy characteristics of mining contra-rotating axial flow fan. [PDF]
Sci RepChen Y +7 more
europepmc +1 more source
The WINCOF-I code: Detailed description [PDF]
The performance of an axial-flow fan-compressor unit is basically unsteady when there is ingestion of water along with the gas phase. The gas phase is a mixture of air and water vapor in the case of a bypass fan engine that provides thrust power to an ...
Mullican, A., Murthy, S. N. B.
core +1 more source
Experimental and theoretical studies of subsonic fan noise [PDF]
The noise generated by inlet turbulence impinging on a subsonic axial flow fan was studied as a function of tip speed, flow coefficient, and intensity and scale of turbulence was carried out. Both turbulence and far field acoustic measurements were made.
Berkofske, K., Mani, R.
core +1 more source
The Aerodynamic Performance of an Over-the-Rotor Liner With Circumferential Grooves on a High Bypass Ratio Turbofan Rotor [PDF]
While liners have been utilized throughout turbofan ducts to attenuate fan noise, additional attenuation is obtainable by placing an acoustic liner over-the-rotor.
Bozak, Richard F. +2 more
core +1 more source
Investigation of the unsteady pressure distribution on the blade of an axial flow fan [PDF]
A major source of the noise generated by high bypass ratio aircraft fan engines is the unsteady pressures (forces and moments) acting on the fan blades.
Henderson, R. E.
core +1 more source
Aerodynamics of advanced axial-flow turbomachinery [PDF]
A multi-task research program on aerodynamic problems in advanced axial-flow turbomachine configurations was carried out at Iowa State University. The elements of this program were intended to contribute directly to the improvement of compressor, fan ...
Kavanagh, P. +2 more
core +1 more source
Correlation of part-span damper losses through transonic rotors operating near design point [PDF]
The design-point losses caused by part-span dampers (PSD) were correlated for 21 transonic axial flow fan rotors that had tip speeds varying from 350 to 488 meters per second and design pressure ratios of 1.5 to 2.0.
Roberts, W. B.
core +1 more source