This volume collects the edited and reviewed contribution presented in the 9th iTi Conference that took place virtually, covering fundamental and applied aspects in turbulence. In the spirit of the iTi conference, the volume is produced after the conference so that the authors had the opportunity to incorporate comments and discussions raised during the meeting.

In the present book, the contributions have been structured according to the topics:

I Experiments

II Simulations and Modelling

III Data Processing and Scaling

IV Theory

V Miscellaneous topics

Inhalt

Topic I: Experiments 1. Dynamic triad interactions and non-equilibrium Turbulence. Velte and Buchhave 2. Turbulent/turbulent entrainment. Kankanwadi and Buxton 3. Active Control of Turbulent Convective Heat Transfer with Plasma Actuators. Castellanos, Michelis, Discetti, Ianiro and Kotsonis 4. Mean Parameters of Incompressible Turbulent Boundary Layer with Zero Pressure Gradient on the Wall of the TsAGI T-128 Wind Tunnel at Very High Reynolds Numbers. Gorbushin, Osipova and Zametaev 5. Investigation of self-similarity of the temperature stratified turbulent boundary layer over the wavy surface in laboratory conditions. Sergeev, Troitskaya, Kandaurov and Vdovin 6. On similarity of turbulence statistics of a turbulent planar jet taking the static pressure into account. Ito, Ito, Alfredsson, Segalini and Matsubara 7. Mean velocity profiles over streamwise-aligned permeable ridhes. Okazaki, Takase, Kuwata and Sug 8. Energy dissipation and total entropy production in SHREK experiment. Kharche, Fuchs, Bon-Mardion, Moro, Rousset, Baudet, Peinke and Girard Topic II: Simulations and Modelling 9. The Filtering Approach as a tool for modeling and analyzing turbulence. Germano, Abbà, Cimarelli, Ferrero, Grinstein, Klein, Larocca, Saenz and Scovazzi 10. Dynamic Bridging for Coarse Grained Simulations of Turbulent Material Mixing. Grinstein, Saenz and Germano 11. Dynamic tensorial eddy viscosity and turbulent stresses. Abbá, Cimarelli and Germano 12. A numerical study of the spanwise turbulence past a cylinder flow. Ferrero, Larocca, Scovazzi and Germano 13. Asymmetry in wake of oscillating foils with combined pitching and heaving motion. Verma and Hemmati 14. Helical structures in the wake of long wall-mounted prisms at high incident angles. Zargar and Hemmati 15. A Spatially Accelerating Turbulent Flow with Longitudinally Moving Walls. Falcone and He 16. Dissimilarity between heat and momentum transfer of turbulent heat transfer over surfaces with hemisphere protrusions. Nagura, Kuwata and Suga Topic III: Data Processing and Scaling 17. The diagnostic plot - a tutorial with a ten year perspective. Alfredsson, Segalini and Örlu 18. Bayesian Optimisation with Gaussian Process Regression Applied to Fluid Problems. Rezaeiravesh, Morita, Tabatabaei, Vinuesa, Fukagata and Schlatter 19. Data-driven dynamics description of a transitional boundary layer. Foroozan, Guerrero, Ianiro and Discetti 20. Identification of a stochastic Hopf bifurcation from stationary measurement data of a turbulent flow. Sieber, Paschereit and Oberleithner 21. Data-driven identification of robust low-order models for dominant dynamics in turbulent flows. Schubert, Sieber, Oberleithner, Martinuzzi 22. Experimental assessment of symmetry induced higher-moment scaling laws in turbulent pipe flow. Zimmerman, Klewicki and Oberlack 23. Characteristics of Reynolds shear stress in Adverse Pressure Gradient Turbulent Boundary Layers. Romero, Zimmerman, Philip and Klewicki 24. Energy transfer in turbulent boundary layers with adverse pressure gradient. Gungor, Gungor and Maciel 25. Influence of rough surface morphology on boundary layer flow. Jurcáková, Procházka, Kellnerová, AntoS, and Skála Topic IV: Theory 26. Similarity scaling of a free, round jet in air. Buchhave, Zhu and Velte 27. Topological Differences in Mean Wakes of Circular and Square Cantilevered Cylinders. Kindree, Yan and Martinuzzi 28. Large-Scale-Motions and self-excited clustering of coherent structures in wall turbulence. Tardu 29. The conservative pressure Hessian and the free fluid particle model. Carbone, Bragg, Tom, Wilczek and Iovieno 30. Modelling pressure Hessian in turbulence through tensor function representation theory. Carbone and Wilczek 31. Stretched Amplitude Decaying Fourier Modes in the Jet Far-Field. Hodzic, Meyer, George and Velte 32. Generalizable Theory of Reynolds Stress. Lee 33. Spectral Energetics of a Quasilinear Approximation in Uniform Shear Turbulence. Hernändez and Hwang Topic V: Miscellaneous topics 34.Turbulence & Uncertainty for Future Renewable Energy Reliability. Tavner and Zappalá 35. Instability on rotating sharp cones - revisited. Kato, Alfredsson and Lingwood 36. Rotational effects on layered structures in inhomogeneous stratified turbulence. Iida 37. Magnetoclinicity instability. Yokoi and Tobias 38. Beginning of Taylor's and wavy vortices at the loss of stability of a conducting liquid flow produced by the rotating magnetic field. Zibold 39. Investigation of the Flow Generated by the Surface Discharge on the Cylinder Body in the Quiescent Air. Ivchenko and Shakhov 40.Numerical and Physical Aspects of Large-Eddy Simulation of Turbulent Mixing in a Helium-Air Supersonic Co-flowing Jet. Troshin, Bakhne and Sabelnikov 41.Turbulent energy production in the boundary layer of a gas flow near the free surface of a liquid. Goltsman and Saushin 42. Phase distribution of the developed three-component pipe flows. Saushin and Goltsman