@article{WOS:000746697400001,

title = {An experimental data-driven mass-spring model of flexible Calliphora 

 wings},

author = {Hung Truong and Thomas Engels and Henja Wehmann and Dmitry Kolomenskiy and Fritz-Olaf Lehmann and Kai Schneider},

doi = {10.1088/1748-3190/ac2f56},

issn = {1748-3182},

year  = {2022},

date = {2022-03-01},

journal = {BIOINSPIRATION & BIOMIMETICS},

volume = {17},

number = {2},

publisher = {IOP Publishing Ltd},

address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND},

abstract = {Insect wings can undergo significant deformation during flapping motion 

 owing to inertial, elastic and aerodynamic forces. Changes in shape then 

 alter aerodynamic forces, resulting in a fully coupled fluid-structure 

 interaction (FSI) problem. Here, we present detailed three-dimensional 

 FSI simulations of deformable blowfly (Calliphora vomitoria) wings in 

 flapping flight. A wing model is proposed using a multi-parameter 

 mass-spring approach, chosen for its implementation simplicity and 

 computational efficiency. We train the model to reproduce static 

 elasticity measurements by optimizing its parameters using a genetic 

 algorithm with covariance matrix adaptation (CMA-ES). Wing models 

 trained with experimental data are then coupled to a high-performance 

 flow solver run on massively parallel supercomputers. Different features 

 of the modeling approach and the intra-species variability of elastic 

 properties are discussed. We found that individuals with different wing 

 stiffness exhibit similar aerodynamic properties characterized by 

 dimensionless forces and power at the same Reynolds number. We further 

 study the influence of wing flexibility by comparing between the 

 flexible wings and their rigid counterparts. Under equal prescribed 

 kinematic conditions for rigid and flexible wings, wing flexibility 

 improves lift-to-drag ratio as well as lift-to-power ratio and reduces 

 peak force observed during wing rotation.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Bufferand_2022,

title = {Implementation of multi-component Zhdanov closure in SOLEDGE3X},

author = {H Bufferand and J Balbin and S Baschetti and J Bucalossi and G Ciraolo and Ph Ghendrih and R Mao and N Rivals and P Tamain and H Yang and G Giorgiani and F Schwander and M Scotto d'Abusco and E Serre and J Denis and Y Marandet and M Raghunathan and P Innocente and D Galassi},

url = {https://doi.org/10.1088/1361-6587/ac4fac},

doi = {10.1088/1361-6587/ac4fac},

year  = {2022},

date = {2022-03-01},

journal = {Plasma Physics and Controlled Fusion},

volume = {64},

number = {5},

pages = {055001},

publisher = {IOP Publishing},

abstract = {The multi-component fluid closure derived by Zhdanov (2002 Transport Processes in Multicomponent Plasma (London: Taylor and Francis)) is implemented in the fluid code SOLEDGE3X-EIRENE to deal with arbitrary edge plasma composition. The closure assumes no distinction between species such as light versus heavy species separation. The work of Zhdanov is rewritten in a matricial form in order to clearly link friction forces and heat fluxes to the different species velocities and temperature gradients.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{WOS:000751809800001c,

title = {Single-cell transcriptomics uncovers an instructive T-cell receptor role  in adult gamma delta T-cell lineage commitment},

author = {Sara Scaramuzzino and Delphine Potier and Robin Ordioni and Pierre Grenot and Dominique Payet-Bornet and Herve Luche and Bernard Malissen},

doi = {10.15252/embj.2021110023},

issn = {0261-4189},

year  = {2022},

date = {2022-02-17},

journal = {EMBO JOURNAL},

abstract = {After entering the adult thymus, bipotent T-cell progenitors give rise 

 to alpha beta or gamma delta T cells. To determine whether the gamma 

 delta T-cell receptor (TCR) has an instructive role in gamma delta 

 T-cell lineage commitment or only ``confirms'' a pre-established gamma 

 delta T-cell lineage state, we exploited mice lacking expression of LAT, 

 an adaptor required for gamma delta TCR signaling. Although these mice 

 showed a T-cell development block at the CD4(-)CD8(-) double-negative 

 third (DN3) stage, 0.3% of their DN3 cells expressed intermediate 

 levels of gamma delta TCR (further referred to as gamma delta(int)) at 

 their surface. Single-cell transcriptomics of LAT-deficient DN3 gamma 

 delta(int) cells demonstrated no sign of commitment to the gamma delta 

 T-cell lineage, apart from gamma delta TCR expression. Although the lack 

 of LAT is thought to tightly block DN3 cell development, we unexpectedly 

 found that 25% of LAT-deficient DN3 gamma delta(int) cells were 

 actively proliferating and progressed up to the DN4 stage. However, even 

 those cells failed to turn on the transcriptional program associated 

 with the gamma delta T-cell lineage. Therefore, the gamma delta TCR-LAT 

 signaling axis builds upon a yi5 T-cell uncommitted lineage state to 

 fully instruct adult gamma delta T-cell lineage specification.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2022,

title = {Mechanisms for recirculation cells in granular flows in rotating cylindrical rough tumblers},

author = {Umberto D'Ortona and Nathalie Thomas and Richard M. Lueptow},

url = {http://dx.doi.org/10.1103/PhysRevE.105.014901},

doi = {10.1103/physreve.105.014901},

issn = {2470-0053},

year  = {2022},

date = {2022-01-01},

urldate = {2022-01-01},

journal = {Physical Review E},

volume = {105},

number = {1},

publisher = {American Physical Society (APS)},

abstract = {Friction at the endwalls of partially-filled horizontal rotating tumblers induces curvature and axial drift of particle trajectories in the surface flowing layer. Here we describe the results of a detailed discrete element method study of the dry granular flow of monodisperse particles in threedimensional cylindrical tumblers with endwalls and cylindrical wall that can be either smooth or rough. Endwall roughness induces more curved particle trajectories, while a smooth cylindrical wall enhances drift near the endwall. This drift induces recirculation cells near the endwall. The use of mixed roughness (cylindrical wall and endwalls having different roughness) shows the influence of each wall on the drift and curvature of particle trajectories as well as the modification of the free surface topography. The effects act in opposite directions and have variable magnitude along the length of the tumbler such that their sum determines both direction of net drift and the recirculation cells. Near the endwalls, the dominant effect is always the endwall effect, and the axial drift for surface particles is toward the endwalls. For long enough tumblers, a counter-rotating cell occurs adjacent to each of the endwall cells having a surface drift toward the center because the cylindrical wall effect is dominant there. These cells are not dynamically coupled with the two endwall cells. The competition between the drifts induced by the endwalls and the cylindrical wall determines the width and drift amplitude for both types of cells. },

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{w14010062,

title = {Wind-Induced Resuspension and Transport of Contaminated Sediment from the Rove Canal into the Etang De Berre, France},

author = {Elena Alekseenko and Bernard Roux and Konstantin Kuznetsov},

url = {https://www.mdpi.com/2073-4441/14/1/62},

doi = {10.3390/w14010062},

issn = {2073-4441},

year  = {2022},

date = {2022-01-01},

journal = {Water},

volume = {14},

number = {1},

abstract = {The present study concerns the erosion and transport of severely contaminated sediments in a Canal. It begins in the context of an engineering project aimed to re-introduce a forced convection at the entrance of this Canal by pumping marine water. The local wind is often strong enough to overpass the resuspension threshold; thus, there is a serious risk of downstream contamination of a Mediterranean lagoon. So, the goal is to evaluate this risk as a function of the pumping rate; this contamination is transported by the fine suspended particles. Different scenarios are investigated to determine the downstream transport of suspensions in terms of runoff. These scenarios (of 24 h) contains a succession of 3 periods: constant wind speed, wind slowdown and calm, for two opposite wind directions. Special attention is devoted to the modeling of complex mechanisms of erosion and resuspension during wind periods, deposition during windless periods and sediment consolidation. The main results concern the total flux of the suspended particles through the exit of the Canal at the confluence with the lagoon. It is shown that even for moderate runoff (<6 m3/s) this total flux is large enough, not only during the wind period, but also after several hours of calm.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{WOS:000697391500020,

title = {Internal gravity waves in a stratified layer atop a convecting liquid 

 core in a non-rotating spherical shell},

author = {M. Bouffard and B. Favier and D. Lecoanet and M. Le Bars},

doi = {10.1093/gji/ggab343},

issn = {0956-540X},

year  = {2022},

date = {2022-01-01},

journal = {GEOPHYSICAL JOURNAL INTERNATIONAL},

volume = {228},

number = {1},

pages = {337-354},

abstract = {Seismic and magnetic observations have suggested the presence of a 

 stably stratified layer atop Earth's core. Such a layer could affect the 

 morphology of the geomagnetic field and the evolution of the core, but 

 the precise impact of this layer depends largely on its internal 

 dynamics. Among other physical phenomena, stratified layers host 

 internal gravity waves (IGW), which can be excited by adjacent 

 convective motions. Internal waves are known to play an important role 

 on the large-scale dynamics of the Earth's climate and on the long-term 

 evolution of stars. Yet, they have received relatively little attention 

 in the Earth's outer core so far and deserve detailed investigations in 

 this context. Here, we make a first step in that direction by running 

 numerical simulations of IGW in a non-rotating spherical shell in which 

 a stratified layer lies on top of a convective region. We use a 

 nonlinear equation of state to produce self-consistently such a 

 two-layer system. Both propagating waves and global modes coexist in the 

 stratified layer. We characterize the spectral properties of these waves 

 and find that energy is distributed across a wide range of frequencies 

 and length scales, that depends on the Prandtl number. For the control 

 parameters considered and in the absence of rotational and magnetic 

 effects, the mean kinetic energy in the layer is about 0.1 percent that 

 of the convective region. IGW produce perturbations in the gravity field 

 that may fall within the sensitivity limit of present-day instruments 

 and could potentially be detected in available data. We finally provide 

 a road map for future, more geophysically realistic, studies towards a 

 more thorough understanding of the dynamics and impact of internal waves 

 in a stratified layer atop Earth's core.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{BHAIRAPURADA2022112049,

title = {A Lattice-Boltzmann study of premixed flames thermo-acoustic instabilities},

author = {Karthik Bhairapurada and Bruno Denet and Pierre Boivin},

url = {https://www.sciencedirect.com/science/article/pii/S0010218022000682},

doi = {https://doi.org/10.1016/j.combustflame.2022.112049},

issn = {0010-2180},

year  = {2022},

date = {2022-01-01},

journal = {Combustion and Flame},

volume = {240},

pages = {112049},

abstract = {We present possibly for the first time Lattice-Boltzmann numerical simulations of thermo-acoustic instabilities of premixed flames. We study flames interacting with an imposed acoustic field where flames submitted to a parametric instability can be observed, as well as plane flames re-stabilized by the acoustic forcing. Self-induced thermo-acoustic oscillations of flames propagating in narrow channels are also studied, indicating an unexpected dependency with the channel width. For both excited and self-excited flames, results confirm that Lattice-Boltzmann method can capture the complex coupling between flame dynamics and acoustics.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}