Time Domain Sound Spectrum Measurements in Ducted Axial Fan under Stall Region

International Journal of Thermal Engineering

© 2015 by SSRG - IJTE Journal

Volume 1 Issue 1

Year of Publication : 2015

Authors : Dr.S.Divya Sree, B.Yuvan

10.14445/23950250/IJTE-V1I1P104

How to Cite?

Dr.S.Divya Sree, B.Yuvan, "Time Domain Sound Spectrum Measurements in Ducted Axial Fan under Stall Region," SSRG International Journal of Thermal Engineering, vol. 1,  no. 1, pp. 15-19, 2015. Crossref, https://doi.org/10.14445/23950250/IJTE-V1I1P104

Abstract:

An axial fan is a one type of a compressor that increases the pressure of the air flowing during it. Axial fans draw its name from the truth that they bow air across their axis in a linear direction. The blades of these fans strength of air to move parallel to the streak about which the blades rotate. These types of fans find its applications in a large variety of mechanical and electrical gadgets. Sizes of these fans can choice from a small cooling fan for electronics to a giant fan used in wind tunnels. Presentation of axial fan is found to diminish significantly when insecurity is encountered during its operation. Performance of an axial fan is harshly impaired by many factors mostly related to system instabilities due to rotating stall and surge phenomenon experienced during its operation. The here work involves measuring the time domain sound signal in ducted axial fan under stall region at throttle positions 2 cm from the covering. Aim of the experiment is to measure the time domain sound signal in terms of decibel and understand the sound distinctiveness in ducted axial fan by using sound spectrum analyzer. Dissimilar types of time domain sound signals have been measured under stall region at throttle position 2 cm from the exterior for different rotor speed and different graphs are plotted for ducted axial fan.

Keywords:

Microphone, BNC connector, Data Acquisition System, Spectrum Measurements, Throttle position, Rotor speed.

References:

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