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Bumblebee Flight in Heavy Turbulence
T Engels1,2, D Kolomenskiy3, K Schneider1
1M2P2-CNRS & Aix-Marseille Université, 38 rue Joliot-Curie, 13451 Marseille cedex 20 France.
Abstract:
High-resolution numerical simulations of a tethered model bumblebee in forward flight are performed superimposing homogeneous isotropic turbulent fluctuations to the uniform inflow. Despite tremendous variation in turbulence intensity, between 17% and 99% with respect to the mean flow, we do not find significant changes in cycle-averaged aerodynamic forces, moments, or flight power when averaged over realizations, compared to laminar inflow conditions. The variance of aerodynamic measures, however, significantly increases with increasing turbulence intensity, which may explain flight instabilities observed in freely flying bees.
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