计量学报2025，Vol.46Issue(4)：535-541,7.DOI:10.3969/j.issn.1000-1158.2025.04.10
稀疏单原子气体导热系数的蒙特卡洛模拟
Monte Carlo Simulation for the Thermal Conductivity of a Dilute Monatomic Gas
摘要
Abstract
This work performs a numerical simulation for the one-dimensional heat transfer problem using the direct simulation Monte Carlo(DSMC)method,with the purpose of obtaining the distributions of pressure,density and temperature and the variation of heat conduction coefficient with temperature.Results show that,after achieving the steady state,gas pressure is uniform across the two plates,and its magnitude is inversely proportional to the initial Knudsen number.Gas density is larger and the flow is continuum in the vicinity of the cold plate while gas density is smaller and the flow is in the slip regime near the hot plate.Temperature jump occurs on the two plates,and this phenomenon becomes more evident as the initial Knudsen number grows.The temperature jump is smaller on the cold plate while it is larger on the hot plate.The DSMC data show that the thermal conductivity does not affected by gas pressure and is only a power function of gas temperature.The thermal conductivity from DSMC simulation is in agreement with those data available in the literature,demonstrating its reliability.关键词
热物性计量/导热系数/热传导/平板/单原子气体/蒙特卡洛方法Key words
thermal property measurement/heat conduction coefficient/heat transfer/flat plate/monatomic gas/Monte Carlo method引用本文复制引用
石伟龙,李子玮,靳旭红,程晓丽..稀疏单原子气体导热系数的蒙特卡洛模拟[J].计量学报,2025,46(4):535-541,7.基金项目
国家自然科学基金(11902313) （11902313）
稳定支持项目(80000800029910072348) （80000800029910072348）
