Results 1 to 10 of about 192 (118)

Rarefied gas flow in functionalized microchannels

Scientific 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, Pierre Perrier, Rodion Groll, Benjamin Besser, Stylianos Varoutis, Andreas Lüttge, Irina Graur, Jorg Thöming   +7 more
doaj   +6 more sources

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

فناوری 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, Ramin Zakeri, Ali sarreshtedari   +2 more
doaj   +1 more source

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

Theoretical 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., Milićev Snežana S., Stevanović Nevena D.   +2 more
doaj   +1 more source

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

Journal 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, M. M. Shadman, F. Mansourzadeh   +2 more
doaj   +1 more source

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

Sensors, 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, Emil Manoach, Simona Doneva   +2 more
doaj   +1 more source

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

Fluids, 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, Alexandros Tsimpoukis, Dimitris Valougeorgis   +2 more
doaj   +1 more source

Molecular dynamics simulation on the splitting of shear flow in nanochannels

AIP 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

Scientific 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, R. Groll, B. Besser, J. Thöming   +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

Aerospace, 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, Yong Li, Yong Gao, Chenguang Gao, Weichun Fu   +4 more
doaj   +1 more source

Numerical simulation of a rarefied gas jet emanating from an ion-optical system of the microthruster [PDF]

Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
A jet of ionized rarefied gas escaping from an ion-optical system of a prototype resonator RF-ion thruster into the surrounding space with low background pressure is considered.
K. I. Zharikov, I. S. Vavilov
doaj   +1 more source