  We study the translational and rotational dynamics of neutrally-buoyant
finite-size spheroids in hydrodynamic turbulence by means of fully resolved
numerical simulations. We examine axisymmetric shapes, from oblate to prolate,
and the particle volume dependences. We show that the accelerations and
rotations experienced by non-spherical inertial-scale particles result from
volume filtered fluid forces and torques, similar to spherical particles.
However, the particle orientations carry signatures of preferential alignments
with the surrounding flow structures, which is reflected in distinct axial and
lateral fluctuations for accelerations and rotation rates. The randomization of
orientations does not occur even for particles with volume equivalent diameter
size in the inertial range, here up to 60 $\eta$ at $Re_{\lambda}=120$.
Additionally, we demonstrate that the role of fluid boundary layers around the
particles cannot be neglected to reach a quantitative understanding of particle
statistical dynamics, as they affect the intensities of angular velocities, and
the relative importance of tumbling with respect to spinning rotations. This
study brings to the fore the importance of inertial-scale flow structures in
homogeneous and isotropic turbulence and their impacts on the transport of
neutrally-buoyant bodies with size in the inertial range.
