Outlet Surface Area Influence in Spiral Casing Design on Centrifugal Fan Performance


  •   Ardit Gjeta

  •   Lorenc Malka


In this paper, the effect of the outlet surface area of the spiral casing on the performance of a centrifugal fan was investigated using open source CFD software OpenFOAM [1]. An automized loop with RANS and data post-processing is set up using Matlab, for allowing a large number of parameter variations. The effect was analyzed as a function of total pressure loss and static pressure recovery coefficient and on total efficiency as well.

Keywords: Efficiency, Outlet Surface Area, Pressure Recovery, Spiral Casing


OpenFOAM, “The Open Source CFD Toolbox, User Guide” Version 3.0.1, 2015.

Eck, B.: “Fans, Design and operation of centrifugal, axial-flow and cross-flow fans”. Pergamon Press, 1973, ch. 11, pp. 189-192.

Carolus, Th.: “Ventilatoren”, Springer, 2013, ch. 2, pp. 40-44.

Gjeta A., Bamberger K., Carolus Th, Londo A.: “Parametric Study of Volutes for Optimal Centrifugal Fan Impellers”, FAN 2018 - International Conference on Fan Noise, Aerodynamics, Applications & Systems, Darmstadt, Germany, April 18-20, 2018.

Gjeta, A. 2019. “Effect of Clearance Gap in Spiral Casing Design of a Centrifugal Fan with Optimized Impellers”, European Journal of Engineering Research and Science. 4, 9 (Sep. 2019), 181-185. DOI: https://doi.org/10.24018/ejers.2019.4.9.1533.

Bamberger K., Belz J., Carolus Th., Nelles O. “Aerodynamic Optimization of Centrifugal Fans Using CFD-Trained Meta-Models”. International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC), Hawaii, Honolulu, April 10-15, 2016.

E. Ayder R. Van den Braembussche: “Experimental and Theoretical Analysis of the Flow in a Centrifugal Compressor Volute”, 1993

Ferziger, Joel H.; Perić, M.: “Computational methods for fluid dynamics”. 3rd, rev. ed. Berlin, London: Springer, 2002.

Patankar, S. V.: “Numerical Heat Transfer and Fluid Flow”, Hemisphere Publishing Corporation, 1980.

Wilcox David C.: “Turbulence Modeling for CFD”, 1994.

Menter, F. R. & Esch, T. “Elements of Industrial Heat Transfer Prediction”. 16th Brazilian Congress of Mechanical Engineering (COBEM), 2001.

Launder, B. E. and Spalding, D. B. “The numerical computation of turbulent flow”. Computer Methods in Applied Mechanics and Engineering 3, 269-289, 1974.


Download data is not yet available.


How to Cite
Gjeta, A. and Malka, L. 2020. Outlet Surface Area Influence in Spiral Casing Design on Centrifugal Fan Performance. European Journal of Engineering and Technology Research. 5, 1 (Jan. 2020), 37-41. DOI:https://doi.org/10.24018/ejers.2020.5.1.1705.