Rotor vibration and experimental Study of Centrifugal fan

Abstract

Industrial fans are a necessity in milling plants that run around the clock. Unexpected downtime due to a fan’s mechanical issues can cost a company hundreds of thousands of dollars in lost time and throughput. Accurate predictions of rotor system dynamic characteristics are very important and essential for reliable long-term fan operation.During its operation, several forces act on the centrifugal forces; like fluid-induced forces but also forces with a mechanical background. These forces originate due to imperfect balance (like a slight bent in the shaft or a mass eccentricity), design faults, and bearings. These forces may grow to an unacceptable level when the rotor is operational near its natural frequency. Rotor vibration was studied analytically and numerically using Solidworks frequency analysis and an experimental test are performed to validate the results.A solution to the founded problem was proposed at the end.