首页> 美国政府科技报告 >Kinetic Modeling of Temperature Driven Flows in Short Microchannels
【24h】

Kinetic Modeling of Temperature Driven Flows in Short Microchannels

机译:短微通道内温度驱动流动的动力学模型

获取原文

摘要

The temperature driven gas flow in a two-dimensional finite length microchannel and a cylindrical tube are studied numerically with the goal of performance optimization of a nanomembrane-based Knudsen compressor. The numerical solutions are obtained using direct simulation Monte Carlo method and discrete ordinate method for BGK model kinetic equation in a wide range of Knudsen numbers from 0.05 to 50. The length-to-height ratios from 5 to 30 were examined. Three different wall temperature distributions were considered, namely, linear, step-wise, and a non-monotonic profile typical for a radiantly heated Knudsen compressor membrane. The short channel end effects are characterized, and the sensitivity of the mass flow rate to a non-monotonic temperature distribution is shown.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号