This volume collects the edited and reviewed contributions presented in the 8th iTi Conference on Turbulence, held in Bertinoro, Italy, in September 2018. In keeping with the spirit of the conference, the book was produced afterwards, so that the authors had the opportunity to incorporate comments and discussions raised during the event.    The respective contributions, which address both fundamental and applied aspects of turbulence, have been structured according to the following main topics:  I TheoryII Wall-bounded flowsIII Simulations and modellingIV ExperimentsV Miscellaneous topicsVI Wind energy

Inter-scale energy transfer in a multi-scale flow.- Three-dimensional global stability on Stuart vortex of free shear layer.- Near-wall turbulence in a localized puff in a pipe.- Reduced description and modelling of small-scale turbulence by means of a tensorial turbulent viscosity.- Symmetry-Based Turbulence Modeling.- Development of a linear mode in a turbulent boundary layer.- Spanwise organisation of buffer layer coherent structures.- Shear/buoyancy interaction in wall bounded turbulent flows.- Logarithmic behaviour of wall-attached structures in wall-bounded turbulent flows.- Law of the wall and law of the wake in turbulent parallel flow.- Large-scale energy in turbulent boundary layers: Reynolds-number and pressure-gradient effects.- Identifying the wall signature of large-scale motions with extended POD.- Roughness and Reynolds number effects on the flow past a rough-to-smooth step change.- Flow dynamics in the roughness sublayer of atmospheric boundary layers.- Convection velocities in turbulent boundary layers over rough surfaces.- Influence of upstream perturbations on wall heat transfer via large-scale motions.- Turbulence production in the low polymer drag reduction regime.