Methods#
Experiments#
Important measurement methods.
One point measurement: hot wire, Pitot tube, …
PIV,
particule tracking.
Taylor approximation, also know as the “frozen turbulence” hypothesis. \(u(t) \rightarrow u(x)\)
Simulations (DNS, RANS, LES)#
Three main types of flow simulations:
Direct Numerical Simulations (DNS), Navier-Stokes equations without approximation. The most demanding in terms of computational resources.
Large Eddy Simulations (LES), Space-average Navier-Stokes equations,
Reynolds-Average Navier-Stokes simulations (RANS), Time-average Navier-Stokes equations.
LES and RANS need turbulence models.