Results 111 to 120 of about 6,525,998 (141)
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Restricted Collision List method for faster Direct Simulation Monte-Carlo (DSMC) collisions
Journal of Computational Physics, 2016The ‘Restricted Collision List’ (RCL) method for speeding up the calculation of DSMC Variable Soft Sphere collisions, with Borgnakke–Larsen (BL) energy exchange, is presented. The method cuts down considerably on the number of random collision parameters which must be calculated (deflection and azimuthal angles, and the BL energy exchange factors).
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International Journal of Modeling, Simulation, and Scientific Computing, 2016
Direct Simulation Monte Carlo (DSMC) solves the Boltzmann equation with large Knudsen number. The Boltzmann equation generally consists of three terms: the force term, the diffusion term and the collision term. While the first two terms of the Boltzmann equation can be discretized by numerical methods such as the finite volume method, the third term ...
Di Zhao, Haiwu He
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Direct Simulation Monte Carlo (DSMC) solves the Boltzmann equation with large Knudsen number. The Boltzmann equation generally consists of three terms: the force term, the diffusion term and the collision term. While the first two terms of the Boltzmann equation can be discretized by numerical methods such as the finite volume method, the third term ...
Di Zhao, Haiwu He
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Benchmarking a New, Open-Source Direct Simulation Monte Carlo (DSMC) Code for Hypersonic Flows
2012This paper describes the application of a new DSMC code, called dsmcFoam, which has been written within the framework of the open-source computational fluid dynamics (CFD) toolbox OpenFOAM[1]. The main features of dsmcFoam are its C++ modularity, its unlimited parallel processing capability and its ability to easily handle arbitrary, complex 3D ...
Abdul O. Ahmad +2 more
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2000
An AFRL/NRL team has recently been selected to develop a scalable, parallel, reacting, multidimensional (SUPREM) Direct Simulation Monte Carlo (DSMC) code for the DoD user community under the High Performance Computing Modernization Office (HPCMO) Common High Performance Computing Software Support Initiative (CHSSI).
Carolyn Kaplan +3 more
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An AFRL/NRL team has recently been selected to develop a scalable, parallel, reacting, multidimensional (SUPREM) Direct Simulation Monte Carlo (DSMC) code for the DoD user community under the High Performance Computing Modernization Office (HPCMO) Common High Performance Computing Software Support Initiative (CHSSI).
Carolyn Kaplan +3 more
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The Study on the Two-Phase Flow in the Microchannel Using DSMC(Direct Simulation Monte Carlo) Method
Transactions of the Korean Society of Mechanical Engineers B, 2003In contrast to the high demand for MEMS devices, microflow analysis is not feasible even for single-phase flow with conventional Navier-Stokes equation because of non-continuum effect when characteristic dimension is comparable with local mean free path.
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IEEE Transactions on Plasma Science, 1995
We present a two dimensional direct simulation Monte Carlo (DSMC) study of the rarefied reactive flow of neutrals and ions in a low pressure inductively coupled plasma reactor. The spatially-dependent rate coefficients of electron impact reactions and the electrostatic field were obtained from a fluid plasma simulation.
D.J. Economou +3 more
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We present a two dimensional direct simulation Monte Carlo (DSMC) study of the rarefied reactive flow of neutrals and ions in a low pressure inductively coupled plasma reactor. The spatially-dependent rate coefficients of electron impact reactions and the electrostatic field were obtained from a fluid plasma simulation.
D.J. Economou +3 more
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IEEE Transactions on Plasma Science, 1996
Strong density gradients of a gas species can be sustained even at very low pressures when the reaction probability of that species is high. Under these conditions, inlet gas arrangements are very important to reaction uniformity.
D.J. Economou, T.J. Bartel
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Strong density gradients of a gas species can be sustained even at very low pressures when the reaction probability of that species is high. Under these conditions, inlet gas arrangements are very important to reaction uniformity.
D.J. Economou, T.J. Bartel
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Aerosol Science and Technology, 2012
The friction factor of an aerosol particle depends upon the Knudsen number (Kn), as gas molecule–particle momentum transfer occurs in the transition regime. For spheres, the friction factor can be calculated using the Stokes–Millikan equation (with the slip correction factor).
Chonglin Zhang +4 more
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The friction factor of an aerosol particle depends upon the Knudsen number (Kn), as gas molecule–particle momentum transfer occurs in the transition regime. For spheres, the friction factor can be calculated using the Stokes–Millikan equation (with the slip correction factor).
Chonglin Zhang +4 more
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2023
In this thesis the applicability of two novel numerical methods - Event Splitting (ES) and Dual Grids - was studied for modeling gap closure within an overall DSMC-PIC approach. Gap closure is a difficult computational problem due to massive gradients in density and electrostatic properties, extreme regime (relativistic electrons), and highly ...
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In this thesis the applicability of two novel numerical methods - Event Splitting (ES) and Dual Grids - was studied for modeling gap closure within an overall DSMC-PIC approach. Gap closure is a difficult computational problem due to massive gradients in density and electrostatic properties, extreme regime (relativistic electrons), and highly ...
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2017
Direct Simulation Monte Carlo (DSMC) is one of the most widely used tools for numerical investigation of strongly non-equilibrium flows. Progress in improving computational efficiency of DSMC methods has allowed for use of detailed state-to-state models of physico-chemical processes in the simulations, instead of the less accurate Larsen-Borgnakke and ...
OBLAPENKO, Georgii +2 more
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Direct Simulation Monte Carlo (DSMC) is one of the most widely used tools for numerical investigation of strongly non-equilibrium flows. Progress in improving computational efficiency of DSMC methods has allowed for use of detailed state-to-state models of physico-chemical processes in the simulations, instead of the less accurate Larsen-Borgnakke and ...
OBLAPENKO, Georgii +2 more
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