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Performance Enhancement of IND 25 Centrifugal Fan by CFD Analysis

Vivek Brahmbhatt, Gaurav Patel

Impeller blades are one of important element of a centrifugal fan.They are mostly categorised into six types: AF, BI, BC, FC, RT, RB among which the BI i.e. impeller with back blades are considered as highly effective. The succeeding paper presents the design methodology for the centrifugal fan system with impellers having backward blades. The numerical design technique is established for it and the CFD optimization has been carried out for volute casing to advance the outcomes which have been achieved from the numerical method. The outcomes are correlated with those obtained from the numerical method established. The concept of 2D steady state analysis is applied in the CFD analysis of the centrifugal fan. The volute casing was optimized by reducing the volute clearances by 10-15%. Hence the design procedure which includes the support of CFD analysis has been established effectively.