Results 51 to 60 of about 15,542 (295)
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
core +1 more source
Advanced Engineering Materials, EarlyView.Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller +6 more
wiley +1 more source
Evaluation of the 1-D hyperbolic quadrature method of moments for non-equilibrium flows [PDF]
ESAIM: Proceedings and SurveysWhen considering moment methods for the resolution of the free-transport term of the 1-D kinetic equation, the hyperbolic quadrature method of moments (HyQMOM) closure introduced in [12] leads to a globally hyperbolic system of conservation equations ...
Laurent Frédérique, Fox Rodney O.
doaj +1 more source
Boosting the convergence of low-variance DSMC by GSIS
Advances in Aerodynamics, 2023 The low-variance direct simulation Monte Carlo (LVDSMC) is a powerful method to simulate low-speed rarefied gas flows. However, in the near-continuum flow regime, due to limitations on the time step and spatial cell size, it takes plenty of time to find ...
Liyan Luo, Qi Li, Lei Wu
doaj +1 more source
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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Multiscale lattice Boltzmann approach to modeling gas flows [PDF]
, 2010 For multiscale gas flows, kinetic-continuum hybrid method is usually used to balance the computational accuracy and efficiency. However, the kinetic-continuum coupling is not straightforward since the coupled methods are based on different theoretical ...
E. F. TORO +6 more
core +2 more sources
Advanced Engineering Materials, EarlyView.High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin +4 more
wiley +1 more source
Nuclear FusionIn a fusion reactor, an in-vessel loss of coolant accident (LOCA) involving the helium-cooled blanket will lead to the resuspension and migration of tritiated and micron-sized tungsten dust deposited at the bottom of the vacuum vessel under high-speed ...
Zhijie Qin +5 more
doaj +1 more source
Optimal Control of Multiagent Decision-Making Based on Competence Evolution
Discrete Dynamics in Nature and Society, 2023 We employ the theory of rarefied gas dynamics and optimal control to investigate the kinetic model of decision-making. The novelty of this paper is that we develop a kinetic model that takes into account both the influence of agents’ competence and ...
Hongjing Chen, Chunhua Hu, Zhi Huang
doaj +1 more source
DSMC Modeling Of Gasdynamics, Radiation And Fine Particulates In Ionian Volcanic Jets [PDF]
, 2003 Aerospace ...
Gimelshein, N. E. +6 more
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