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首页> 外文期刊>Journal of Computational Physics >Modified relaxation time Monte Carlo method for continuum-transition gas flows
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Modified relaxation time Monte Carlo method for continuum-transition gas flows

机译:连续跃迁气流的修正弛豫时间蒙特卡罗方法

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Gas flows in the continuum-transition regime often occur in micro-electro-mechanical systems. The relaxation time Monte Carlo (RTMC) method was modified by using an ellipsoid statistical model and a multiple translational temperature model in the BGK model equation to simulate continuum-transition gas flows. The modified RTMC method uses a simplified form of the generalized relaxation time, which is related to the macro velocity and the local Knudsen number. The results for Couette flow and Poiseuille flow in microchannels predicted using the modified RTMC and the DSMC are in good agreement with the modified RTMC being much faster than the DSMC for continuum-transition gas flow simulations. (C) 2008 Elsevier Inc. All rights reserved.
机译:连续过渡态中的气流经常发生在微机电系统中。通过在BGK模型方程中使用椭球统计模型和多次平移温度模型修改了弛豫时间蒙特卡洛(RTMC)方法,以模拟连续过渡气流。改进的RTMC方法使用广义弛豫时间的简化形式,它与宏速度和局部Knudsen数有关。使用改进的RTMC和DSMC预测的微通道中的库埃特流和泊雪峰流的结果与改进的RTMC相比要好得多,因为在连续介质过渡气流模拟中,改进的RTMC比DSMC快得多。 (C)2008 Elsevier Inc.保留所有权利。

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