Knudsen Number Effects on Two-Dimensional Rayleigh–Taylor Instability in Compressible Fluid: Based on a Discrete Boltzmann Method [PDF]
Entropy, 2020 Based on the framework of our previous work [H.L. Lai et al., Phys. Rev. E, 94, 023106 (2016)], we continue to study the effects of Knudsen number on two-dimensional Rayleigh–Taylor (RT) instability in compressible fluid via the discrete Boltzmann method.
Haiyan Ye +6 more
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Generalized Knudsen number for unsteady fluid flow [PDF]
Physical Review Letters, 2017 We explore the scaling behavior of an unsteady flow that is generated by an oscillating body of finite size in a gas. If the gas is gradually rarefied, the Navier-Stokes equations begin to fail and a kinetic description of the flow becomes more ...
Ekinci, K. L., Kara, V., Yakhot, V.
core +6 more sources
Measurement of Heat Transfer from Anodic Oxide Film on Aluminum in High Knudsen Number Flows [PDF]
Micromachines, 2020 The heat transfer in vacuum depends on the gas−surface interaction. In this study, the heat flux from anodic oxide films on aluminum with different anodizing times through a gas confined between two surfaces with different temperatures was studied.
Hiroki Yamaguchi, Kenji Kito
doaj +2 more sources
Drag on Gasborne Nanoparticles in the High Knudsen Number Regime
KONA Powder and Particle Journal, 2014 At small Knudsen numbers (continuum regime) and sufficiently small Reynolds numbers, the friction resistance of particles with the carrier gas is described by means of the Stokes formula assuming no slip of the gas ...
Tao Wu, Alfred P. Weber
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THE INFLUENCE OF GRAVITY ON A MICROFLUIDIC MIXED CONVECTION BY APPLYING LATTICE BOLTZMANN METHOD [PDF]
مجله مدل سازی در مهندسی, 2014 In this article the effects of gravity on the mixed convection of a microflow is studied numerically by using lattice Boltzmann method (LBM). To do this, the hydrodynamic boundary condition equations should also be modified.
arash Karimipour +2 more
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Mechanism of tangential Knudsen force at different Knudsen numbers
Physics of Fluids, 2022 In a rarefied gas with a non-uniform temperature field, one phenomenon that arises is the tangential Knudsen force. Various research studies have investigated the tangential Knudsen force but have been limited to specific cases. In this study, we investigated the mechanism of the thermally induced tangential Knudsen force, using theoretical analysis ...
Clint John Cortes Otic, Shigeru Yonemura
openaire +1 more source
A New Methodology to Define Net Pay Zone in Gas Reservoirs [PDF]
Iranian Journal of Oil & Gas Science and Technology, 2020 Net pay thickness is defined as that portion of a reservoir which contains economically producible hydrocarbons with today’s technology, prices, and costs.
Mehdi Qassamipour +2 more
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Nanoconfined Bulk-Gas Transport Behavior over a Wide Range of Knudsen Number
Geofluids, 2022 Shale matrix, located at Guizhou Province, is rich in nanopores, and gas slippage takes place during shale gas development, resulting in inapplicability of the classical Navier-Stokes equation.
Yi Zhang
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Apparent permeability in tight gas reservoirs combining rarefied gas flow in a microtube
Frontiers in Earth Science, 2023 In tight gas reservoirs, the major flow channels are composed of micro/nanopores in which the rarefaction effect is prominent and the traditional Darcy law is not appropriate for gas flow.
Lingli Zheng +5 more
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Adaptive wave-particle decomposition in UGKWP method for high-speed flow simulations
Advances in Aerodynamics, 2023 With wave-particle decomposition, a unified gas-kinetic wave-particle (UGKWP) method has been developed for multiscale flow simulations. With the variation of the cell Knudsen number, the UGKWP method captures the transport process in all flow regimes ...
Yufeng Wei, Junzhe Cao, Xing Ji, Kun Xu
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