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Direct Simulation Monte Carlo and Granular Gases
2022Granular systems are ensembles of inelastic particles which dissipate energy during collisions. Granular systems serve as excellent models for a wide variety of materials such as sand, soils, corn, and powder. A rather remarkable property of granular systems is when excited, whether due to an interstitial fluid or via the boundaries, the granular ...
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Quiet direct simulation Monte-Carlo with random timesteps
Journal of Computational Physics, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Fluctuating hydrodynamics and direct simulation Monte Carlo
AIP Conference Proceedings, 2012Thermodynamic fluctuations are significant at microscopic scales even when hydrodynamic transport models (i.e., Navier-Stokes equations) are still accurate; a well-known example is Rayleigh scattering, which makes the sky blue. Interesting phenomena also appear in non-equilibrium systems, such as the enhancement of diffusion during mixing due to the ...
Kaushik Balakrishnan +3 more
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Distributional Direct Simulation Monte Carlo Methods
10th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, 2010The Direct Simulation Monte Carlo (DSMC) method has gained popularity in recent years for treatment of flows in which the assumptions behind the continuum equations of fluid mechanics break down. In traditional DSMC methods, simulated particles may possess only a single velocity. This representation leads to a nonphysical representation of the velocity
Christopher Schrock, Aihua Wood
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Mean scattering angle method for direct simulation Monte Carlo
Physical Review E, 2022In order to predict the postcollision velocities in the binary collision, one needs the deflection angle given by the solution of the trajectory equation of classical mechanics. In the direct simulation Monte Carlo, it has been conventional to assume that the scattering is isotropic taking the hard sphere scattering law (the variable hard sphere model).
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Graphics processing unit based direct simulation Monte Carlo
SIMULATION, 2011The direct simulation Monte Carlo (DSMC) is a computational method for fluid mechanics simulation in the regime of rarefied gas flow. It is a numerical solution of the Boltzmann equation based on an individual particle basis. Accurate simulations typically require particle numbers in the range of hundreds of thousands to millions.
Denis V. Gladkov +3 more
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Direct Monte-Carlo simulations in a gas centrifuge
AIP Conference Proceedings, 2001The study is related to the centrifugation process for isotope separation. In a gas centrifuge, the major part of the rotating gas is modeled by fluid equations with this gas flow described by suitable Navier-Stokes. Nevertheless, a kinetic description of the gas is necessary for the feed gas expansion from the central pipe, and for the residual gas ...
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Time step truncation in direct simulation Monte Carlo for semiconductors
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2005PurposeTo provide an accurate analysis of the systematic error introduced by the constant time technique free flight mechanism, due to the choice of the time step and number particles.Design/methodology/approachA homogeneous (bulk) silicon semiconductor is studied by using direct simulation Monte Carlo (DSMC).FindingsThe systematic error turns out to ...
MUSCATO, Orazio, WAGNER W.
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Direct simulation Monte Carlo method for particle coagulation and aggregation
AIChE Journal, 2000AbstractA Monte Carlo simulation technique developed describes dispersed‐phase systems with emphasis on coagulation and aggregation. The method does not use particle trajectories, but is based on the transformation of known collision frequencies into collision probabilities of particle pairs.
Kruis, Frank Einar +2 more
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Direct Monte Carlo simulation of the ocean surface
IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174), 1998Various elements of the ocean surface can focus or defocus light working as the lenses. In the latter case an underwater object can be hidden. When the ocean surface is focusing light, a strong return signal can be detected and misinterpreted as the underwater object at a given depth. Therefore, modeling the electromagnetic wave scattering on the ocean
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