Facoltà di Ingegneria Civile e Industriale

Turbulent flow has always attracted the interest of scientists, owing to its prominent importance in the engineering practice. Furthermore, turbulent flow in the presence of walls is particularly challenging, since it requires correct prediction of the dynamics arising when a body (walls) is in relative  motion with respect to a fluid. Professor Sergio Pirozzoli of DIMA ICI has shown that the use of supercomputing tools allows to verify theoretical predictions about the behavior of pipe flows with high Reynolds number, and violations of universality of wall turbulence. The numerical solutions obtained for canonical flows highlight the great complexity of the physical phenomenon as well as the presence of organization on both large and small scales.

More info:

DNS of passive scalars in turbulent pipe flow
Direct numerical simulation of forced thermal convection in square ducts up to Reτ≈2000
One-point statistics for turbulent pipe flow up to Reτ≈6000