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Effect of viscosity on slip boundary conditions in rarefied gas flows
Vietnam Journal of Mechanics, 2019 The viscosity of gases plays an important role in the kinetic theory of gases and in the continuum-fluid modeling of the rarefied gas flows. In this paper we investigate the effect of the gas viscosity on the surface properties as surface gas ...
Nam T. P. Le
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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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Rarefied Poiseuille Flow in a Circular Tube [PDF]
EPJ Web of Conferences, 2019 An isothermal rarefied gas flow through a long circular tube due to longitudinal pressure gradient (a three-dimensional Poiseuille problem) was studied using the linearized Bhatnagar-Gross-Krook model kinetic equation over the whole range of the Knudsen ...
Germider Oksana, Popov Vasily
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Model Kinetic Equations for Multiply Ionized Gas Mixtures
Frontiers in Astronomy and Space Sciences, 2021 Model kinetic equations are proposed for the description of ionized monoatomic gas mixture flows. The mixtures are assumed enough rarefied to be treated as ideal gases after multiple ionization steps.
Maria A. Rydalevskaya +1 more
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A thermal lattice Boltzmann model for micro/nano-flows [PDF]
, 2008 The dynamic behavior of charged micro and nanofluids plays a crucial role in a large variety of industrial and biological processes. Such dynamic behavior is characterized by the simultaneous occurrence of several competing mechanisms, such as ...
Barber, Robert W. +3 more
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Particle-based hybrid and multiscale methods for nonequilibrium gas flows
Advances in Aerodynamics, 2019 Over the past half century, a variety of computational fluid dynamics (CFD) methods and the direct simulation Monte Carlo (DSMC) method have been widely and successfully applied to the simulation of gas flows for the continuum and rarefied regime ...
Jun Zhang +4 more
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Gas-kinetic scheme for rarefied flow simulation [PDF]
Mathematics and Computers in Simulation, 2006 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kun Xu 0001, Eswar Josyula
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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
doaj
A discrete unified gas-kinetic scheme for multi-species rarefied flows
Advances in Aerodynamics, 2023 A discrete unified gas kinetic scheme (DUGKS) is developed for multi-species flow in all flow regimes based on the Andries-Aoki-Perthame (AAP) kinetic model. Although the species collision operator in the AAP model conserves fully the mass, momentum, and
Ziyang Xin, Yue Zhang, Zhaoli Guo
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A comparison of simulation methods for rarefied gas flows [PDF]
Physics of Fluids, 1995 Simulation methods like DSMC are efficient tools to compute rarefied gas flows. Using supercomputers it is possible to include various real gas effects like vibrational energies or chemical reactions in a gas mixture. Nevertheless it is still necessary to improve the accuracy of the current simulation methods in order to reduce the computational effort.
Struckmeier, Jens, Steiner, Konrad
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