Multiscale simulation of non-isothermal microchannel gas flows

Numerical analysis of gas flows in a microchannel using the Cascaded Lattice Boltzmann Method with varying Bosanquet parameter

Abstract. In this paper, a Cascaded Lattice Boltzmann Method with second order slip boundary conditions is developed to study gas flows in a microchannel in the slip and transition flow regimes with a wide range of Knudsen numbers. For the first time the effect of wall confinement is considered on the effective mean free path of the gas molecules using a function with nonconstant Bosanquet para...

Modeling and Simulation of Six-Bed Cyclic Adsorption Process Using in Mercaptan Removal from Natural Gas: Non-Isothermal and Non-Adiabatic Conditions

Compressible Gas Flow Inside a Two-Dimensional Uniform Microchannel

This paper analyzes a compressible gas flow through a microchannel, and reports a complete set of first-order analytical solutions. Thiswork represents an extension of the previouswork ofArkilic on compressibleflows through amicrochannel. First, by comparing themagnitudes of different forces in the compressible gasflow,weobtain proper estimations for the Reynolds and Mach numbers at the channel...

Gas flows in microchannels and microtubes

This study analyses compressible gas flows through microchannels or microtubes, and develops two complete sets of asymptotic solutions. It is a natural extension of the previous work by Arkilic et al. on compressible flows through microchannels. First, by comparing the magnitudes of different forces in the compressible gas flow, we obtain proper estimations for the Reynolds and Mach numbers at ...

Numerical Simulation of Turbulent Subsonic Compressible Flow through Rectangular Microchannel

In this study, turbulent compressible gas flow in a rectangular micro-channel is numerically investigated. The gas flow assumed to be in the subsonic regime up to Mach number about 0.7. Five low and high Reynolds number RANS turbulence models are used for modeling the turbulent flow. Two types of mesh are generated depending on the employed turbulence model. The computations are performed for R...