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Physical Review E
It is true that the Knudsen number that characterizes gas flows in microchannels increases to a finite value as the geometric dimension is reduced. However, since the gas in such a flow may retain a small mean free path and a small mean molecular spacing, the gas can still be rather dense in microdevices. Gas flows in microchannels have mainly been studied by molecular dynamics and direct simulation Monte Carlo methods. However, both methods are computationally expensive. In this work, we studydoi:10.1103/physreve.76.016707 pmid:17677594 fatcat:uhyocfyo25fp5obj4oymaicc4m