Sound power level and noise generation mechanism of axial-flow fans.

End-plate for noise-by-flow control in axial fans

The paper presents a design procedure for anti-vortex endplates that are fitted to tip limited blades of the subsonic axial fans utilised in compact cooling units. The authors study the impact of tip leakage vortex bursting on the performance of the studied class of fans. The vortex breakdown occurs in the swirling flows at a blade’s tip, and is found to be a flow feature associated with the pr...

Local improvement of flow and noise performances of axial-flow fans in a household refrigerator

In this paper, numerical and experimental investigations on an axial-flow fan with grooved/double-sectional blades are performed to improve its performance in terms of volume flow rate and noise at a local operating point. The target fan is used to cool a mechanical room of a household refrigerator. However, it is found that the target system has more resistance than that for which the fan is o...

A Procedure for Design of the Axial Flow Fans

A Procedure for Design of the Axial Flow Fans

Synergistic Noise-By-Flow Control Design of Blade-Tip in Axial Fans: Experimental Investigation