Том 53 № 6

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Gas Velosity and Mass Flowrate Scaling Modeling in Microelectronics’ Thermal Control Systems
(2018) B. V. Kosoy, Y. Utaka
In the present research we investigate pressure driven flow in the transition and free-molecular flow regimes with the objective of developing unified flow models for microchannels. These models are based on a velocity scaling law, which is valid for a wide range of Knudsen number. Simple slip-based descriptions of flowrate in microchannels are corrected for effects in the transition and free-molecular flow regimes with the introduction of a rarefaction factor. The resulting models can predict the velocity distribution, mass flowrate, pressure and shear stress distribution in rectangular microchannels in the entire Knudsen flow regime.