Under the snow in Beijing


Tsinghua Univeristy campus in a cold day: in the back the auditorium, built in 1917 in Jeffersonian -> Palladian -> Classical style
With Yihong Du @ Tsinghua University
The icy convective cell at Chao SUN lab

POF25: good science & old friends

Detlef Lohse’s Physics of Fluids group at Twente University reaches its 25 years of activity. The event has been celebrated by 3 intense and joyful days of talks, lab visit, and gathering with old friends.

Detlef behind the bubbly water tunnel (ph. credits N.Bremond)
New tools for turbulence
The POF25 anniversary book (full version available here https://pof.tnw.utwente.nl/resources )
Fede, Nico, me, Vale, Chao
The Asian connection, with Yoshi, Kazu, Chao
The Franco-Mexican connection: Sylvain and Gab
A rare encounter in person with Linfeng.

A wind tunnel in the garage

In preparation for the Fête de la Science 2023 ( the french science vulgarization week that takes place each year in fall)  during the summer break I made in a small wind tunnel.  I had some fun in the garage playing the experimentalist, and I was amazed by the beauty of fluid dynamical patterns.

Internship offer: Sedimentation of microplastics in the ocean mixed layer

Title: Sedimentation of microplastics in the ocean mixed layer: numerical study of a model system

Laboratory: Unité de Mécanique de Lille J. Boussinesq, Univ. Lille Villeneuve d’Ascq, Cité Scientifique

Supervisors:  Enrico Calzavarini et Stefano Berti (Univ. Lille, ULR 7512 – Unité de Mécanique de Lille – Joseph Boussinesq (UML))

Duration: 6 months (from february/march 2023)

More informations : M2_particles_in_mixed_layer

Internship offer: analysis of sinking particle fluxes in the ocean

Visutrap device deployment off coast of California (USA) , 2021 (Courtesy of T. Briaud)

In collaboration with Dr. Tristan Biard and Laget Manon (LOG UMR 8187) we propose an analysis of field measurements of deep sea particle sinking fluxes.
Duration: 6 months
Internship main location : Laboratoire d’Océanologie et Géosciences (UMR 8187) – Wimereux – France
Internship description and application rules:  M2_internship_proposal

Kolmogorov flow

Visualization of the velocity field in a moderately turbulent Kolmogorov flow (spatial resolution 128^3). The  flow is sustained by a steady unidirectional force (here along the X axis)  with a monochromatic sinusoidal dependence proportional to  sin(k Y).  The sinusoidal profile is clearly reflected in the large scale velocity field in the X-Y planes (visible at the beginning and at the end of the movie).