Direct numerical simulation of turbulent open channel flow: Streamwise turbulence intensity scaling and its relation to large-scale coherent motions

Christian Bauer, Yoshiyuki Sakai, Markus Uhlmann

We conducted direct numerical simulations of turbulent open channel flow (OCF) and closed channel flow (CCF) of friction Reynolds numbers up to ${\mathrm{Re}}_{\tau }\approx 900$ in large…