The dimensionless performances of an axial fan are derived analytically from an arbitrary work distribution. The formulation is illustrated using five different work distributions at a selected operating point and comparing the resulting hydraulic characteristics. A first validation of the formulation is brought by means of RANS and URANS of an axial fan with free vortex work distribution. It is shown that a single RANS prediction at the design point allows predicting the hydraulic characteristic up to 20% off the design flow rate with very good accuracy. Based on these results, a strategy for axial fan design at multiple operating points is proposed.
- International Gas Turbine Institute
Towards Multiple Operating Point Axial Fan Design
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Semel, M, Haag, V, Delgado, A, & Grilliat, J. "Towards Multiple Operating Point Axial Fan Design." Proceedings of the ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. Volume 1: Aircraft Engine; Fans and Blowers; Marine. Montreal, Quebec, Canada. June 15–19, 2015. V001T09A006. ASME. https://doi.org/10.1115/GT2015-42673
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