Preprint Article Version 1 This version is not peer-reviewed

Analysis of the Aerodynamic and Structural Performance of a Cooling Fan with Morphing Blade

Version 1 : Received: 12 May 2017 / Approved: 16 May 2017 / Online: 16 May 2017 (13:06:29 CEST)

A peer-reviewed article of this Preprint also exists.

Suman, A.; Fortini, A.; Aldi, N.; Pinelli, M.; Merlin, M. Analysis of the Aerodynamic and Structural Performance of a Cooling Fan with Morphing Blade . Int. J. Turbomach. Propuls. Power 2017, 2, 7. Suman, A.; Fortini, A.; Aldi, N.; Pinelli, M.; Merlin, M. Analysis of the Aerodynamic and Structural Performance of a Cooling Fan with Morphing Blade . Int. J. Turbomach. Propuls. Power 2017, 2, 7.

Journal reference: Int. J. Turbomach. Propuls. Power 2017, 2, 7
DOI: 10.3390/ijtpp2020007

Abstract

The concept of smart morphing blades, which can control themselves to reduce or eliminate the need for active control systems, is a highly attractive solution in blade technology. In this paper an innovative passive control system based on Shape Memory Alloys (SMAs) is proposed. On the basis of previous thermal and shape characterization of a single morphing blade for a heavy-duty automotive cooling axial fan, this study deals with the numerical analysis of the aerodynamic loads acting on the fan. By coupling CFD and FEM approaches it is possible to analyze the actual blade shape resulting from both the aerodynamic and centrifugal loads. The numerical results indicate that the polymeric blade structure ensures proper resistance and enables shape variation due to the action of the SMA strips.

Subject Areas

morphing blade; adaptive geometry; computational fluid dynamics; fluid-structure coupling

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