Results 71 to 80 of about 17,567 (301)
Unified Gas-kinetic Scheme with Multigrid Convergence for Rarefied Flow Study
, 2017 The unified gas kinetic scheme (UGKS) is a direct modeling method based on the gas dynamical model on the mesh size and time step scales. With the implementation of particle transport and collision in a time-dependent flux function, the UGKS can recover ...
Xu, Kun, Zhong, Chengwen, Zhu, Yajun
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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
Molecular dynamics studies of anomalous transport in rarefied gas flows [PDF]
, 2010 We investigate the thermodynamically non-equilibrium gas dynamics by measuring molecular free path distribution functions, inter-molecular collision rates and wall dependent mean free path (MFP) profiles using the molecular dynamics (MD) method.
Dongari, Nishanth +2 more
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Asymptotic Theory of Rayleigh Problem in Rarefied Gas [PDF]
, 1979 The asymptotic theory of Rayleigh shear flow for large values of time is developed on the basis of the linearized Boltzmann-Krook equation. Asymptotic equations for mean velocity outside the Knudsen layer are obtained by employing the Hilbert expansion ...
Yamamoto, Kyoji
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Statistical Simulation of Low-Speed Rarefied Gas Flows [PDF]
Journal of Computational Physics, 2001 Conclusions: An information preservation technique is proposed to overcome serious statistical fluctuations inherent in direct simulation Monte Carlo (DSMC) method for low-speed rarefied gas flows. This technique is applied to benchmark problems, namely Couette, Poiseuille, and Rayleigh flows over the entire Knudsen regime.
Fan, Jing, Shen, Ching
openaire +1 more source
Advanced Engineering Materials, EarlyView.Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein +2 more
wiley +1 more source
Physical Review Accelerators and Beams, 2021 A transverse beam profile monitor that visualizes a two-dimensional beam-induced fluorescent image was developed. The monitor employs a sheet-shaped gas flow formed by a technique of rarefied gas dynamics.
Ippei Yamada +5 more
doaj +1 more source
Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio
Advanced Engineering Materials, EarlyView.This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov +4 more
wiley +1 more source
Direct simulation Monte Carlo method for gas flows in micro-channels with bends with added curvature
EPJ Web of Conferences, 2017 Gas flows in micro-channels are simulated using an open source Direct Simulation Monte Carlo (DSMC) code dsmcFOAM for general application to rarefied gas flow written within the framework of the open source C++ toolbox called OpenFOAM.
Tisovský Tomáš, Vít Tomáš
doaj +1 more source
Slip conditions with wall catalysis and radiation for multicomponent, nonequilibrium gas flow [PDF]
The slip conditions for a multicomponent mixture with diffusion, wall-catalyzed atom recombination and thermal radiation are derived, and simplified expressions for engineering applications are presented. The gas mixture may be in chemical nonequilibrium
Hendricks, W. L.
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