The ephemeral beauty of turbulent flows: This figure shows the temperature dissipation rate, in false colors (light tones intense dark are small), from a snapshot of a bidimensional Rayleigh-Benard convective system at Ra=10^9 and Pr=1. The spatial resolution is 2048 x 4096 discretization points.

https://www.utwente.nl/en/tnw/pof20/

Babak’s paper on convective melting is out, check it here: [PRF journal]

https://link.aps.org/doi/10.1103/PhysRevFluids.3.054604

https://pof.tnw.utwente.nl/rbc2018

I co-organize a summer school with my colleagues Francois G. Schmitt and Stefano Berti. More infos @ http://active-turbulence.univ-lille.fr
 

I have visited Daniela Mansutti and Andrea Scagliarini at Istituto per le Applicazioni del Calcolo “Mauro Picone”

Cover image: “Visualisation of copepods in turbulent flow from an individual behaviour model of jump-escape-reaction from turbulence. The background colour map pictures the instantaneous value of the fluid deformation (higher values in light colours) in a fully-resolved numerically simulated turbulent flow. White contour lines mark boundaries between so called comfort (low strain) and alert (high strain) regions. Copepods are represented as ellipsoidal bodies. Arrows indicate the direction of their instantaneous velocity, due either to fluid transport or to their intermittent jump swimming motion”. Ardeshiri et al. J. Plankton Res., 39, 878–890 (2017).

Many thanks to Hendong Xi who has invited me at the Northwestern Polytechnical University in Xi’an for a visit to his group and to his Wonderful city. I love Shaanxi!