We investigated the long-term dynamics of a turbulent, submerged jet at Re= 16 400 to
develop a strategy for data-assisted, fast calculations of passive species transport. We
obtained our data from high-fidelity large eddy simulations LES, which we validated against
in-house particle image velocimetry measurements. The flow was split into coherent and
incoherent fields using the method of proper orthogonal decomposition (POD). Depending
on the number of POD modes to construct coherent velocity fields, different patterns in the …

Advances in computational fluid dynamics (CFD) techniques along with an increase of
computer power have opened the door to study complex problems involving turbulence.
However, the high number of degrees of freedom present in turbulent flows implies
extremely expensive calculations making detailed, long-term and large-scale studies
unfeasible. Depending on the specific purpose of a research endeavor, there are various
approaches to investigate turbulent flows. One can employ classical CFD methods such as …