Modeling gas flow through microchannels and nanopores
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TLDR
In this paper, a two-dimensional finite-element based micro-scale flow model is developed to efficiently predict the overall flow characteristics up to the transition regime for reasonably high Knudsen number flow inside microchannels and nanopores.Abstract:
Microchannel based systems have emerged as a critical design trend in development of precise control and maneuvering of small devices. In microelectronics, space propulsion and biomedical areas, these systems are especially useful. Nanoscale pores are recently becoming of great interest due to their beneficial drag and heat transfer properties. However it is difficult to predict the flow performance of these microsystems and nanosystems numerically since the standard assumptions of using Navier–Stokes equations break down at micrometer scales, while the computational times of applicable molecular-dynamics codes become exorbitant. A two-dimensional finite-element based microscale flow model is developed to efficiently predict the overall flow characteristics up to the transition regime for reasonably high Knudsen number flow inside microchannels and nanopores. Presented two-dimensional numerical results for Poiseuille flow of a simple fluid through the microchannel are comparable to the numerical and exper...read more
Citations
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Carbon Dioxide Storage Capacity of Organic-Rich Shales
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Gas flow in ultra-tight shale strata
TL;DR: In this article, a pressure-dependent permeability function, referred to as the APF, was proposed for ultra-tight porous media, where the matrix pore network is composed of nanometre-to-micrometre-size pores.
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Experimental investigation of matrix permeability of gas shales
TL;DR: In this article, the effects of confining stress and pore pressure on permeability were examined on intact core samples from the Barnett, Eagle Ford, Marcellus, and Montney shale reservoirs.
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Shale-Gas Permeability and Diffusivity Inferred by Improved Formulation of Relevant Retention and Transport Mechanisms
TL;DR: In this article, a theoretically improved model incorporating the relevant mechanisms of gas retention and transport in gas-bearing shale formations is presented for determination of intrinsic gas permeability and diffusivity, by considering the various flow regimes according to a unified Hagen-Poiseuille-type equation, fully compressible treatment of gas and shale properties, and numerical solution of the nonlinear pressure equation.
References
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Book
Molecular Gas Dynamics and the Direct Simulation of Gas Flows
TL;DR: The direct simulation Monte Carlo (or DSMC) method has, in recent years, become widely used in engineering and scientific studies of gas flows that involve low densities or very small physical dimensions as mentioned in this paper.
Journal ArticleDOI
Difference Methods for Initial-Value Problems.
Difference methods for initial-value problems
Robert D. Richtmyer,K. W. Morton +1 more
TL;DR: In this article, differentielles and stabilite were used for differentiable transport in the context of transfert de chaleur and ondes Reference Record created on 2005-11-18, modified on 2016-08-08
Journal ArticleDOI
Phase Transition for a Hard Sphere System
Berni J. Alder,T. E. Wainwright +1 more
TL;DR: In this article, a method for solving the simultaneous classical equation of motion of several hundred particles by means of fast electronic computers is described. But the method is not suitable for large numbers of particles.
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Hexagonal pore arrays with a 50-420 nm interpore distance formed by self-organization in anodic alumina
TL;DR: In this article, self-organized hexagonal pore arrays with a 50-420 nm interpore distance in anodic alumina have been obtained by anodizing aluminum in oxalic, sulfuric, and phosphoric acid solutions.
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