Results 41 to 50 of about 6,525,998 (141)

Interactions of Sublimated Frost With Volcanic Plumes: Modeling Io's SO2 Atmosphere Using the DSMC Method

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Io's tenuous atmosphere consists primarily of sulfur dioxide (SO2 ${\text{SO}}_{2}$) with observed column densities of approximately 1016−1017 $1{0}^{16}-1{0}^{17}$ cm−2 ${\text{cm}}^{-2}$. However, it remains uncertain whether the sublimation of SO2 ${\text{SO}}_{2}$ surface frost or volcanic outgassing is the primary source of the SO2 ...
Leander Schlarmann, Audrey Vorburger, Tim Mosimann, Nicolas Thomas, Peter Wurz   +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

Spatial Surface Mass Flux on Confined Fibers: DSMC Validation of a Kinetic‐Theory Model for Forced‐Flow CVI Deposition

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
ABSTRACT Chemical vapor infiltration (CVI) is widely used to manufacture ceramic matrix composites, but deposition non‐uniformity and premature pore closure still limit processing time and cost. CVI operates at low pressures and in microscale pores, where non‐equilibrium gas transport develops, making common continuum assumptions unreliable.
Ege Can Ek, Reetesh Ranjan, Isabella Riggs, Vimal Ramanuj, Ramanan Sankaran, Murat Barisik   +5 more
wiley   +1 more source

Rarefied gas effects on the aerodynamics of high area-to-mass ratio spacecraft in orbit [PDF]

, 2013
The aerodynamic situation of a satellite-on-a-chip operating in low Earth orbit bears some resemblance to a classical Crookes radiometer. The large area-to-mass ratio characteristic of a SpaceChip means that very small surface-dependent forces produce ...
White, Craig, Colombo, Camilla, McInnes, Colin, Scanlon, Thomas, Reese, Jason   +4 more
core   +4 more sources

Modeling the Delivery of Mercury's Polar Ice by a Volatile‐Rich Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Permanently shadowed regions near Mercury's poles are thought to harbor significant deposits of water ice, the origin of which remains to be conclusively determined. One leading hypothesis is that most of the water observed today may have been delivered by a relatively recent, volatile‐rich impact comparable in scale and age to that which ...
Parvathy Prem, Nancy L. Chabot, Carolyn M. Ernst, Dana M. Hurley, David B. Goldstein, Jordan K. Steckloff   +5 more
wiley   +1 more source

Multiscale simulation of rarefied gas dynamics via direct intermittent GSIS-DSMC coupling

Advances in Aerodynamics
The general synthetic iterative scheme (GSIS) has proven its efficacy in modeling rarefied gas dynamics, where the steady-state solutions are obtained after dozens of iterations of the Boltzmann equation, with minimal numerical dissipation even using ...
Liyan Luo, Lei Wu
doaj   +1 more source

Multiscale simulation of interacting turbulent and rarefied gas flows in the DSMC framework

Theoretical and Applied Mechanics Letters
A multiscale stochastic-deterministic coupling method is proposed to investigate the complex interactions between turbulent and rarefied gas flows within a unified framework.
Liyan Luo, Songyan Tian, Lei Wu
doaj   +1 more source

Transport of Water in a Transient, Impact‐Generated Atmosphere on Mercury

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Mercury's polar cold traps host water ice deposits that are likely populated with impact‐delivered water via Mercury's exosphere. However, Mercury's near‐sun location experiences an extremely high photodestruction rate that rapidly destroys water with a timescale of only ∼3.5 hr.
J. K. Steckloff, D. B. Goldstein, P. L. Varghese, L. M. Trafton, P. Prem   +4 more
wiley   +1 more source

Using Plücker Coordinates for Pumping Speed Evaluation of Molecular Pump in the DSMC Method

International Journal of Rotating Machinery, 2001
In this study, the Plücker coordinates representation is used to formulate the ruled surface and the molecular path for pumping speed performance evaluation of a molecular vacuum pump.
Fong-Zhi Chen, Ming-June Tsai, Yu-Wen Chang, Rong-Yuan Jou, Hong-Ping Cheng   +4 more
doaj   +1 more source

An Extreme Events Study of the Storm‐Time Variations in Satellite Drag Coefficients

Space Weather, Volume 23, Issue 12, December 2025.
Abstract This study examines storm‐time variations in the drag coefficients CD $\left({C}_{D}\right)$ of the GRACE and GRACE Follow‐On (FO) satellites during selected extreme geomagnetic storms—the October 2003, November 2003, November 2004, and May 2024 storms.
Soumyajit Dey, Phillip C. Anderson, Marcin D. Pilinski, Eric K. Sutton, Aaron L. Bukowski   +4 more
wiley   +1 more source