International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Numerical Design and Parametric Optimization of Centrifugal Fans with Airfoil Blade Impellers

Author Affiliations

  • 1 School of Mechanical and Building Sciences, VIT University, Vellore-632014, Tamilnadu, INDIA

Res. J. Recent Sci., Volume 1, Issue (10), Pages 7-11, October,2 (2012)


There are six types of centrifugal fan impellers AF, BI, BC, FC, RT, RB among which the AF i.e. impellers with airfoil blades are considered as highly efficient. The following paper presents the design methodology for the centrifugal fan system with impellers having airfoil blades. The numerical design procedure is developed for it and the CFD optimization has been carried out for volute casing to improve the results which have got from the numerical procedure only. A case is studied from technical bulletin1 for this purpose and the results are correlated with those obtained from the numerical procedure developed. The concept of MRF (moving reference frame) is applied in the CFD analysis of the centrifugal fan as a rotating region around the impeller, keeping the components of the impeller stationary. The volute casing was optimized by decreasing the volute clearances by 10-14% and increasing the cut off height by 5% keeping it at 35% of impeller diameter. Thus the design methodology which includes the assistance of CFD optimization has been developed successfully.


  1. Aerovent Technical Bulletin, 720, May (2011)
  2. Bleier Frank P., Fan Handbook Selection, Application and Design, McGraw Hill publications (1997)
  3. Eck, Bruno ‘FANS’- Reference book on fan engineering, (1975)
  4. Air and Gas Flow, Chapter Number 3, Book on Fans and ventilation
  5. Singh O.P, Rakesh Khilwani T. Shrinivasulu M. Kannan, Parametric Study of Centrifugal Fan Performance: Experiment and simulation, International Journal of Advances in Engineering and TechnologyMay (2011)
  6. Shah K.H., Vibhakar N.N., Channiwala S.A, Dec-2003, Unified and comparative performance evaluation of forward and backward curved radial tipped centrifugal fan, International Conference on MechanicalEngineering (ICME) (2003)
  7. Vibhakar N., Masutage S.D., Channiwala S.A., Three dimensional analysis of backward curved radial tipped blade Centrifugal fan designed as per unified methodology with varying number of blades, Jan (2012)
  8. Pathak Sunil, Turbocharging and oil techniques in light motor vehicle, Research Journal of Recent Sciences, 1(1)60-65 (2012)
  9. Purkar T. Sanjay and Pathak Sunil, Aspect of Finite Element Analysis Methods for Prediction of Fatigue Crack Growth Rate, Research Journal of Recent Sciences, 1(2),85-91 (2012)
  10. Kumar Krishnan and Aggarwal M.L., A Finite Element Approach for Analysis of a Multi Leaf Spring using CAE Tools, Research Journal of Recent Sciences, 1(2), 92 -92(2012)
  11. Balasubramanian P and Ramamurti V, Frequency Analysis of Centrifugal Fan Impellers, Journal of Sound and Vibration, 1, 1-13 (1987)