Results 11 to 20 of about 17,567 (301)
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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Numerical simulation of moving rigid body in rarefied gases [PDF]
, 2014 In this paper we present a numerical scheme to simulate a moving rigid body with arbitrary shape suspended in a rarefied gas. The rarefied gas is simulated by solving the Boltzmann equation using a DSMC particle method.
Hardt, Steffen +3 more
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Rarefied gas dynamics and its applications to vacuum technology [PDF]
, 2007 Basic concepts of rarefied gas dynamics are given in a concise form. Some problems of rarefied gas flows are considered, namely, calculations of velocity slip and temperature jump coefficients, gas flow through a tube due to pressure and temperature ...
Sharipov, F
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Dissipative mass flux and sound wave propagations in monatomic gases [PDF]
, 2011 Predicting sound wave dispersion in monatomic gases is a fundamental gas flow problem in rarefied gas dynamics. The Navier-Stokes-Fourier model is known to fail where local thermodynamic equilibrium breaks down.
Dadzie, Kokou, Reese, Jason
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Rarefied gas flow through a slit.
SHINKU, 1990 A rarefied gas flow through a slit in an infinite plane wall, induced by a small pressure difference across the slit, is studied on the basis of the kinetic theory. The system of integral equations for the macroscopic variables (the velocity, density, and temperature of the gas), derived from the linearized Boltzmann–Krook–Welander equation with the ...
Hasegawa, Manabu, Sone, Yoshio
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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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Accuracy analysis of high-order lattice Boltzmann models for rarefied gas flows [PDF]
, 2011 In this work, we have theoretically analyzed and numerically evaluated the accuracy of high-order lattice Boltzmann (LB) models for capturing non-equilibrium effects in rarefied gas flows.
Meng, Jian-Ping, Zhang, Yonghao
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Comparative study of the discrete velocity and lattice Boltzmann methods for rarefied gas flows through irregular channels [PDF]
, 2017 Rooted from the gas kinetics, the lattice Boltzmann method (LBM) is a powerful tool in modeling hydrodynamics. In the past decade, it has been extended to simulate rarefied gas flows beyond the Navier-Stokes level, either by using the high-order Gauss ...
Lindsay, Scott +3 more
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DSMC–LBM mapping scheme for rarefied and non-rarefied gas flows [PDF]
Journal of Computational Science, 2016 We present the formulation of a kinetic mapping scheme between the Direct Simulation Monte Carlo (DSMC) and the Lattice Boltzmann Method (LBM) which is at the basis of the hybrid model used to couple the two methods in view of efficiently and accurately simulate isothermal flows characterized by variable rarefaction effects. Owing to the kinetic nature
Di Staso G +3 more
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A topology optimization method for rarefied gas flows
Nihon Kikai Gakkai ronbunshu, 2017 We construct a topology optimization method for two dimensional rarefied gas flow problems, based on level-set boundary expressions. The degree of rarefaction is expressed by the Knudsen number, which is the ratio of the mean free path and the ...
Ayami SATO +4 more
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