Abstract
The heat conduction of argon gas in 3-D nanoscale pores was studied by direct simulation Monte Carlo (DSMC) method. It was concluded that the size effect on the gas heat conduction is significant and the parabolic heat flux profile has been observed when the Knudsen number is large. The existing models overestimate the thermal conductivity of gas in nanoscale for ignoring the Knudsen layer near solid walls. In order to predict the gaseous thermal conductivity in nanoscale accurately, the mean free path of gas in existing models should be corrected.
| Original language | English |
|---|---|
| Pages (from-to) | 1027-1031 |
| Number of pages | 5 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 37 |
| Issue number | 5 |
| State | Published - 1 May 2016 |
Keywords
- DSMC
- Gaseous thermal conductivity
- Nanoscale
- Size effect
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