Molecular free paths in nanoscale gas flows
نویسندگان
چکیده
منابع مشابه
Oscillatory shear-driven gas flows in the transition and free-molecular-flow regimes
We investigate oscillatory shear-driven gas flows in the transition and free-molecular-flow regimes. Analytical results valid through slip flow and the early transition regime are obtained using a recently proposed, rigorous second-order slip model with no adjustable coefficients. Analytical solution of the collisionless Boltzmann equation provides a description of the high Knudsen number limit...
متن کاملHybrid molecular-continuum methods for micro- and nanoscale liquid flows
Many flows at microscale and below are characterised by an inherent multiscale nature and accurate numerical modelling of the phenomena involved is the cornerstone for enhancing the applicability of micro and nanofluidics in the industrial environment. This paper presents a hybrid molecular-continuum strategy named as point wise coupling for studying complex microand nanoscale flows. In this st...
متن کاملCoupling compositional gas liquid Darcy and free gas flows at porous and free flow domains interface
This paper proposes an efficient splitting algorithm to solve coupled liquid gas Darcy and free gas flows at the interface between a porous medium and a free-flow domain. This model is compared to the reduced model introduced in [6] using a 1D approximation of the gas free flow. For that purpose, the gas molar fraction diffusive flux at the interface in the free-flow domain is approximated by a...
متن کاملModeling and Simulation of Liquid- Gas Free Surface Flows
A model for the simulation of complex three-dimensional free surface flows is presented. An incompressible liquid interacts with a compressible gas. The incompressible Navier-Stokes equations are solved only in the liquid domain while the dynamical effects in the gas are neglected. The compressibility effects of the gas are taken into account by computing its pressure. Surface tension effects a...
متن کاملFree molecular gas drag on fluffy aggregates
Dynamical behaviors of dust particles are governed by gas drag forces in a variety of environments of astrophysical interest, such as protoplanetary disks, upper planetary atmospheres or cometary coma. Monte Carlo (MC) and Quasi Monte Carlo (QMC) simulations have been performed to estimate the drag forces on fluffy aggregates in the free molecular limit, using two different models of molecule-s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Microfluidics and Nanofluidics
سال: 2014
ISSN: 1613-4982,1613-4990
DOI: 10.1007/s10404-014-1535-3