Results 21 to 30 of about 257,159 (120)

Spatially multi-scale artificial neural network model for large eddy simulation of compressible isotropic turbulence

AIP Advances, 2020
In this work, subgrid-scale (SGS) stress and SGS heat flux of compressible isotropic turbulence are reconstructed by a spatially multi-scale artificial neural network (SMSANN).
Chenyue Xie, Jianchun Wang, Hui Li, Minping Wan, Shiyi Chen   +4 more
doaj   +1 more source

Low-overload internal ballistics in UAV ejection using multiple time-sequenced compressed-air chambers

Scientific Reports
Compressed-air ejection systems are characterized by short actuation times and high instantaneous flow rates, which subject unmanned aerial vehicles (UAVs) to significant overloads during launch.
Tian Li, Zhai-jun Lu, Zhi-fu Wang, Shu-jian Yao, Jia-qiang Wang, Dong-run Liu   +5 more
doaj   +1 more source

Towards a spatially resolved, single-ended TDLAS system for characterizing the distribution of gaseous species

Scientific Reports
Many applications require diagnostics that can quantify the distribution of chemical gas species and gas temperature along a single line-of-sight, which is challenging in process environments with limited optical access.
C. Hansemann, M. Bonarens, J. Emmert, K. J. Daun, S. Wagner   +4 more
doaj   +1 more source

The parametric brachistochrone with friction, curvature, and drag

AIP Advances
Following a variational approach, here, we present a novel dynamical model for the parametrically generalized brachistochrone for a mass point motion that includes the Coulomb friction, the path curvature, and viscous drag forces.
Chet N. Tiwari, Parameshwari Kattel, Shiva P. Pudasaini   +2 more
doaj   +1 more source

Waves dictate the yo-yoing decay of a viscoelastic mixing layer

Communications Physics
Fluids with internal microstructure are ubiquitous in biological, industrial, and geophysical settings, yet their flow behaviour remains far from fully understood.
Giulio Foggi Rota, Piyush Garg, Jason Tang, Marco Edoardo Rosti   +3 more
doaj   +1 more source

Experimental Analysis of a Bubble Wake Influenced by a Vortex Street

Fluids, 2018
Bubble column reactors are ubiquitous in engineering processes. They are used in waste water treatment, as well as in the chemical, pharmaceutical, biological and food industry.
Sophie Rüttinger, Marko Hoffmann, Michael Schlüter   +2 more
doaj   +1 more source

Autonomy beyond Privacy? A Rejoinder to Colin Bennett

Surveillance & Society, 2011
A response to Colin Bennett's 'In Defence of Privacy'
Felix Stalder
doaj   +1 more source

Convective dissolution of capillary-trapped carbon dioxide

Communications Earth & Environment
Understanding the processes controlling the fate of carbon dioxide in deep saline aquifers is critical for safe large-scale carbon storage. We describe an experimental model for the dissolution of capillary-trapped carbon dioxide. Our experiment involves
Nicola Mingotti, Andrew W. Woods
doaj   +1 more source

Video-based measurements of the entrainment, speed and mass flux in a wind-blown eruption column

Communications Earth & Environment
On May 4 2010 a wind-blown ash plume issued from Eyjafjallajökull volcano in Iceland. Analysis of a 17-minute-long video recording of the eruption suggests that, within 2–2.5 km of the vent, the flow was moving with the wind and rising under buoyancy ...
Nicola Mingotti, Andrew W. Woods
doaj   +1 more source

Sustained interfacial powering through self-generated mantle and siphon of a gelling droplet

Nature Communications
Autonomous motion in a persistent manner such as spinning of Euler’s disk is long-sought-after by natural or artificial microsystems due to their limited energy loading and is particularly challenging for Marangoni motors as inhomogeneity of active ...
Chunmei Zhou, Caihong Liu, Rui Shi, Hongxuan Liang, Hongtu Tan, Kai Zhuang, Jiakun Guo, Xin Tang   +7 more
doaj   +1 more source