This workshop is partly a follow-up of previous ones, in D'Alembert,
Paris, in May 2015 and May 2016. Transport of passive scalar by an
isotropic velocity eld has been extensively studied. What happens when
the velocity flow is rendered anisotropic by various effects, as mean
shear and mean stratification, is not well known; triadic closures, with
quantitative comparisons to high resolution DNS's, are well suited for a
systems approach to such anisotropic turbulence. In addition, it is
informative to compare the passive scalar and the active one, such as
the density, temperature or concentration fluctuation with a feedback to
fluctuating velocity via buoyancy effects. Of course, a broader range
of models, theories, applications, DNS, LES and physical experiments
will be addressed as follows:
- Extension of spectral theory towards anisotropic shear flows, with
passive and active (buoyant here) scalar eld. Application to practical
(simpler) models for engineering
- Towards unsteady and inhomogeneous flows. Contribution to a mean flow theory. Wallbounded turbulent flows.
- And beyond: improved LES models, flows with solid particles.
The workshop will take place at Ecole Centrale de Marseille, M2P2
, domaine universitaire de Château Gombert, Marseille.
It is co-organised by Pierre Sagaut and Claude Cambon.