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Turbulent diffusion of chemically reacting gaseous admixtures
, 2014 We study turbulent diffusion of chemically reacting gaseous admixtures in a developed turbulence. In our previous study [Phys. Rev. Lett. {\bf 80}, 69 (1998)] using a path-integral approach for a delta-correlated in time random velocity field, we ...
Elperin, Tov +3 more
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Modelling the dynamics of turbulent floods [PDF]
, 2002 Consider the dynamics of turbulent flow in rivers, estuaries and floods. Based on the widely used k-epsilon model for turbulence, we use the techniques of centre manifold theory to derive dynamical models for the evolution of the water depth and of ...
Birkhoff Garrett +5 more
core +2 more sources
, 2006 We studied experimentally the effect of turbulent thermal diffusion in a multi-fan turbulence generator which produces a nearly homogeneous and isotropic flow with a small mean velocity. Using Particle Image Velocimetry and Image Processing techniques we
A Aliseda +30 more
core +1 more source
Sudden viscous dissipation of compressing turbulence
, 2016 Compression of turbulent plasma can amplify the turbulent kinetic energy, if the compression is fast compared to the viscous dissipation time of the turbulent eddies.
Davidovits, S., Fisch, N. J.
core +1 more source
Turbulence and fossil turbulence in oceans and lakes
Chinese Journal of Oceanology and Limnology, 2004 Turbulence is defined as an eddy-like state of fluid motion where the inertial-vortex forces of the eddies are larger than any of the other forces that tend to damp the eddies out. Energy cascades of irrotational flows from large scales to small are non-turbulent, even if they supply energy to turbulence. Turbulent flows are rotational and cascade from
Leung, Pak Tao, Gibson, Carl H.
openaire +2 more sources
Chemical turbulence equivalent to Nikolavskii turbulence [PDF]
Physical Review E, 2004 We find evidence that a certain class of reaction-diffusion systems can exhibit chemical turbulence equivalent to Nikolaevskii turbulence. The distinctive characteristic of this type of turbulence is that it results from the interaction of weakly stable long-wavelength modes and unstable short-wavelength modes.
openaire +3 more sources
Design and Evaluation of Face Mask Filtration: Mechanisms, Formulas, and Fluid Dynamics Simulations
Applied SciencesThe global adoption of face masks as a preventive measure against the spread of the SARS-CoV-2 virus (COVID-19) has spurred extensive research into their filtration efficacy. This study begins by elucidating various mechanisms of particle penetration and
Francesca Pisapia +2 more
doaj +1 more source
Erosion modeling in parallel gate valve [PDF]
FME Transactions, 2020 Gate valves, which are widely used in oil production and transportation processes, can be eroded by high fluid pressures and sand particles contained in crude oil during operation.
Ri Jong Hyok +2 more
doaj
A Lagrangian-based flame index for the transported probability density function method
Theoretical and Applied Mechanics Letters, 2022 We propose a new flame index for the transported probability density function (PDF) method. The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and progress variable directions as the metrics to identify the ...
Zhen Lu +4 more
doaj +1 more source
Applied Sciences, 2019 The turbulence kinetics model (TKM) describes an overall reaction rate for microscopic mass transfer phenomenon expressed as separation intensity, Is, in a turbulent reacting flow.
Mi-Sug Kim
doaj +1 more source