Results 51 to 60 of about 505,681 (289)
New Journal of Physics, 2013 A numerical study that aims to analyze the thermal mechanisms of unsteady, supersonic granular flow by means of hydrodynamic simulations of the Navier–Stokes granular equation is reported in this paper.
Lidia Almazán +4 more
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Tomographic Measurements of Granular Flows in Gases and in Liquids
KONA Powder and Particle Journal, 2014 Two distinct non-intrusive radiation methods known as scanning gamma ray tomography and single profile photon absorptiometry are presented in this paper as tools for the investigation of interstitial voidage ...
Michail S. Nikitidis +3 more
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Stationary Properties of Driven Granular Gases [PDF]
, 2022 In der vorliegenden Dissertation geht es um getriebene granulare Gase in zwei Dimensionen. Zunächst werden Systeme glatter Kugeln zwischen zwei vibrierenden Wänden betrachtet. Solche Systeme sind immer inhomogen. Mit Hilfe ereignisgesteuerter Molekulardynamik-Simulationen messen wir alle hydrodynamischen Felder für einen großen Bereich von ...
Herbst, Olaf +4 more
openaire +2 more sources
Contact forces distribution for a granular material from a Monte Carlo study on a single grain
, 2017 11 páginasThe force network ensemble is one of the most promising statistical descriptions of granular media, with an entropy accounting for all force configurations at mechanical equilibrium consistent with some external stress.
Manuel A. Cárdenas-Barrantes +5 more
core +1 more source
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 +5 more
wiley +1 more source
Vibration Induced Phenomena in Granular Media in Microgravity
EPJ Web of Conferences, 2017 In order to study the dynamical behavior and the handling properties of granular materials under microgravity conditions, ESA is developing the VIP-Gran instrument whose multiple functionalities allow for the study of Vibration Induced Phenomena in ...
Opsomer Eric +2 more
doaj +1 more source
Machine learning for prediction of dynamical clustering in granular gases [PDF]
EPJ Web of ConferencesContinuously excited dense granular gases in microgravity can develop spatial inhomogeneities of the particle distribution. Dynamical clustering is a phenomenon where a significant share of particles concentrate in strongly overpopulated regions.
Preetham Sata Sai +2 more
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Dynamics of Freely Cooling Granular Gases [PDF]
Physical Review Letters, 2002 We study dynamics of freely cooling granular gases in two-dimensions using large-scale molecular dynamics simulations. We find that for dilute systems the typical kinetic energy decays algebraically with time, E(t) ~ t^{-1}, in the long time limit. Asymptotically, velocity statistics are characterized by a universal Gaussian distribution, in contrast ...
Nie, Xiaobo, Ben-Naim, Eli, Chen, Shiyi
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Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Extended hydrodynamic equations for binary granular mixtures [PDF]
EPJ Web of ConferencesThe derivation of 2 × 14-moment equations for a dilute binary granular mixture is outlined, following Grad’s moment method. In addition to the mass, momentum and energy equations for each species, the deviatoric stress tensor, the heat flux vector and ...
Rongali Ramakrishna, Alam Meheboob
doaj +1 more source