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Thomas Carolus and Konrad Bamberger
This study targets determining impellers of impeller-only axial fans with an optimal hub-to-tip ratio for the highest achievable total-to-static efficiency. Differently from other studies, a holistic approach is chosen. Firstly, the complete class of the...
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Dipali Ghodake, Marlène Sanjosé, Stéphane Moreau and Manuel Henner
The effect of blade sweep has been studied numerically with the Lattice Boltzmann Method on a family of low-speed free-vortex axial fans with sweeps of ±45°. Good overall aerodynamic agreement is first demonstrated on all fans at the design condition, pa...
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Alessandro Zarri, Julien Christophe, Stéphane Moreau and Christophe Schram
The low-speed fans used for automotive engine cooling contribute to a significant part of the global noise emitted by the vehicle. A low-order sound-prediction methodology is developed considering the blade sweep-angle effect on the acoustic predictions ...
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Torben Eggers, Hye Rim Kim, Simon Bittner, Jens Friedrichs and Joerg R. Seume
In modern aircraft engines, the low-pressure compressor (LPC) is subjected to a flow characterized by strong wakes and secondary flows from the upstream fan. This concerns ultra-high bypass ratio (UHBR) turbofan engines, in particular. This paper present...
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