Results 31 to 40 of about 22,502 (309)

Turbulence via Intermolecular Potential: Viscosity and Transition Range of the Reynolds Number

, 2023
Turbulence in fluids is an ubiquitous phenomenon, characterized by spontaneous transition of a smooth, laminar flow to rapidly changing, chaotic dynamics.
Rafail V. Abramov
core   +1 more source

Turbulence in the interstellar medium [PDF]

, 2014
Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the re-acceleration and ...
Chian, A. C. -L., Chian, A. C.-L., G. Kowal, Falgarone, E., E. Falgarone, Falceta-Goncalves, D., Kowal, G., Chian, A., A. C.-L. Chian, D. Falceta-Gonçalves   +9 more
core   +1 more source

Instability and transition to turbulence in a free shear layer affected by a parallel magnetic field

, 2007
Instability and transition to turbulence in a temporally evolving free shear layer of an electrically conducting fluid affected by an imposed parallel magnetic field is investigated numerically. The case of low magnetic Reynolds number is considered.
Vorobev, Anatoliy, Vorobev, A., Zikanov, Oleg, Zikanov, O.   +3 more
core   +1 more source

Percolation transition in the kinematics of nonlinear resonance broadening in Charney–Hasegawa–Mima model of Rossby wave turbulence [PDF]

, 2013
We study the kinematics of nonlinear resonance broadening of interacting Rossby waves as modelled by the Charney-Hasegawa-Mima equation on a biperiodic domain. We focus on the set of wave modes which can interact quasi-resonantly at a particular level of
Harris, Jamie, Connaughton, Colm, Bustamante, Miguel D.   +2 more
core   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Evolution of edge turbulence and shear flow approaching the density limit in L-mode plasmas on EAST

Nuclear Fusion
The evolution of edge turbulence and shear flow approaching the density limit in L-mode plasmas on EAST is investigated. The relative fluctuation, cross-correlation power spectral density (CPSD), wave-number spectra, skewness and kurtosis, along with the
P. Wang, G.H. Hu, L. Chen, R. Chen, L. Wang, G.S. Xu, J. Cheng, X.S. Jiang, X.D. Ye, L.L. Shan, Q.Q. Yang, X. Lin, G.F. Ding, D.G. Wu, Y. Lan, N. Yan, J. Peng   +16 more
doaj   +1 more source

Transitional–turbulent spots and turbulent–turbulent spots in boundary layers [PDF]

Proceedings of the National Academy of Sciences, 2017
SignificanceUncovering the constitutive coherent structure in the inner layer of the canonical turbulent boundary layer has remained a central fluid mechanics theme, because it tests our intellectual ability to understand even the simplest external flow.
Xiaohua, Wu, Parviz, Moin, James M, Wallace, Jinhie, Skarda, Adrián, Lozano-Durán, Jean-Pierre, Hickey   +5 more
openaire   +2 more sources

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Transition to Equilibrium and Coherent Structure in Ideal MHD Turbulence

Fluids, 2023
Transition of ideal, homogeneous, incompressible, magnetohydrodynamic (MHD) turbulence to near-equilibrium from non-equilibrium initial conditions is examined through new long-time numerical simulations on a 1283 periodic grid.
John V. Shebalin
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source