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Rarefied gas flow in functionalized microchannels [PDF]

open access: yesScientific Reports, 2023
The interaction of rarefied gases with functionalized surfaces is of great importance in technical applications such as gas separation membranes and catalysis.
Simon Kunze   +7 more
doaj   +7 more sources

Effects of the Wall Temperature on Rarefied Gas Flows and Heat Transfer in a Micro-Nozzle [PDF]

open access: yesMicromachines, 2023
When the satellite is in orbit, the thruster will experience drastic temperature changes (100–1000 K) under solar radiation, which will affect the rarefied gas flow state in the micro-nozzle structure of the cold gas micro-thruster.
Shurui Zhang   +5 more
doaj   +2 more sources

Simulation of Aerodynamic Properties of Rarefied Gas Flow on Satellite Panel by DSMC Method [PDF]

open access: yesفناوری در مهندسی هوافضا, 2022
In this research, the method of simulating the rarefied gas flow on a flat plate and calculating aerodynamic properties have been investigated using direct simulation Monte Carlo or DSMC-Open Foam Software.
SAIED ESKANDARI   +2 more
doaj   +1 more source

Analytical and numerical analysis of nonisothermal compressible rarefied gas flow between parallel plates [PDF]

open access: yesTheoretical and Applied Mechanics, 2023
When dimensions of the flow domain become small, such as in the micro-electro-mechanical systems (MEMS) and nano-electro-mechanical systems (NEMS), rarefaction effects become more prominent.
Vulićević Petar V.   +2 more
doaj   +1 more source

A hybrid CFD-DSMC Method for Numerical Simulation of the Rotating Cylinder Flows [PDF]

open access: yesJournal of Nuclear Research and Applications, 2023
In this work, we attempted to simulate UF6 gas flow in the rarefied and continuum areas of the rotating cylinder using CFD, DSMC, and hybrid one-way and two-way CFD-DSMC methods.
V. Ghazanfari   +2 more
doaj   +1 more source

Vortex-Induced Vibrations of an Elastic Micro-Beam with Gas Modeled by DSMC

open access: yesSensors, 2023
The fluid–structure interaction is one of the most important coupled problems in mechanics. The topic is crucial for many high-technology areas. This work considers the interaction between an elastic obstacle and rarefied gas flow, seeking specific ...
Kiril Shterev   +2 more
doaj   +1 more source

The Half-Range Moment Method in Harmonically Oscillating Rarefied Gas Flows

open access: yesFluids, 2021
The formulation of the half-range moment method (HRMM), well defined in steady rarefied gas flows, is extended to linear oscillatory rarefied gas flows, driven by oscillating boundaries.
Giorgos Tatsios   +2 more
doaj   +1 more source

Molecular dynamics simulation on the splitting of shear flow in nanochannels

open access: yesAIP Advances, 2021
With the vigorous development of micro-/nanoscience and micro-/nanotechnology, fluid flows at the micro-/nanoscale have become an important research field. The molecular dynamics simulations of Couette flow in a nanochannel are carried out in this paper.
Hang Yu, Zhengyu Tian, Fan Yang, Hua Li
doaj   +1 more source

Molecular diameters of rarefied gases

open access: yesScientific Reports, 2022
Molecular diameters are an important property of gases for numerous scientific and technical disciplines. Different measurement techniques for these diameters exist, each delivering a characteristic value.
S. Kunze   +3 more
doaj   +1 more source

DSMC Simulation of the Effect of Needle Valve Opening Ratio on the Rarefied Gas Flows inside a Micronozzle with a Large Length-to-Diameter Ratio

open access: yesAerospace, 2023
The cold gas micro-propulsion system can provide low noise and ultra-high accuracy thrust for satellite platforms for space gravitational wave detection, high-precision earth gravity field measurement.
Xudong Wang   +4 more
doaj   +1 more source

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