Results 11 to 20 of about 3,764 (258)
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 +2 more
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Entropy, 2017 The numerical study of continuum-rarefied gas flows is of considerable interest because it can provide fundamental knowledge regarding flow physics. Recently, the nonlinear coupled constitutive method (NCCM) has been derived from the Boltzmann equation ...
Ke Tang, Hong Xiao
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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
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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
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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 +3 more
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Measurement of low-pressure Knudsen force with deflection approximation for gas detection
Results in Physics, 2019 In this paper, experimental examinations are done to evaluate the thermal Knudsen force in Knudsen gauge at low-pressure condition. This work has focused on the simple technique to visibly observe the induced Knudsen force as main parameter which could ...
Dat D. Vo +3 more
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Understanding of Thermal Conductance of Thin Gas Layers
Advances in Mechanical Engineering, 2013 We studied heat conductions in a thin gas layer at micro- and nanoscales between two straight walls by atomistic modeling. Since the Knudsen number is high while the gas may be not really rarefied, we use the generalized Enskog-Monte-Carlo method (GEMC ...
Xiaodong Shan, Moran Wang
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A Discrete-Ordinates Solution for the Strong Evaporation Problem in Rarefied Gas Dynamics
Trends in Computational and Applied Mathematics, 2021 In this work we solve the nonlinear strong evaporation problem in rarefied gas dynamics. The analysis is based on the BGK model, with three dimensional velocity vector, derived from the Boltzmann equation. We present the complete development of a closed
C. S. Scherer
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EFFECT OF VISCOUS HEAT GENERATION ON TEMPERATURE OF RAREFIED GAS MICROFLOWS DRIVEN BY MOVING SURFACE [PDF]
Journal of Engineering Science and Technology, 2018 Good understanding of the gas flow under rarefied conditions is important for designing the micro-electro-mechanical systems. The Navier-Stokes-Fourier equations with the slip and jump conditions can capture the rarefied gas flows in the slip regime.
NAM T. P. LE, THOAI N. TRAN
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Acceleration Waves in Rational Extended Thermodynamics of Rarefied Monatomic Gases
Fluids, 2020 Rational Extended Thermodynamics theories with different number of moments are usually introduced to study non-equilibrium phenomena in rarefied gases. Here, we use them to describe one-dimensional acceleration waves in a rarefied monatomic gas.
Francesca Brini, Leonardo Seccia
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