摘要
使用FLUENT软件,分别针对恒定壁面和绝热壁面二种边界条件下,pVTt标准容器的进气、抽气过程,以及气体作自然对流过程进行了仿真实验。目的是对两种边界条件下气体的温度与压力变化情况进行对比,并最终在实际应用中选择合适的容器进行容器标定,最终缩短标定时间,提高标定效率,并达到精度要求。仿真结果表明,恒定壁温边界条件下,容器中空气平均温度呈抛物线逐渐变化,直至接近壁面温度,稳定时间较长;绝热边界条件时,容器中空气平均温度迅速稳定,二种边界条件下的气体压力均很快达到均匀。本文给出了FLUENT软件计算出的详细温度、压力分布云图,及平均温度、平均压力随时间的变化曲线,并进行了讨论。
Based on FLUENT software,the process of air exhaust and air inflation in a container of 5 m3 was simulated respectively under two kinds of boundary conditions of isothermal wall and adiabatic wall.The purpose is to compare the temperature and pressure in the container under two kinds of boundary conditions,and the calibration of container selection a suitable container end in practical application,and ultimately shorten the calibration time and improve the calibration efficiency and accuracy.The simulation results show that the average temperature of the air in the container is gradually changed in parabola until it is close to the wall temperatureand the stability time is long.Under the condition of adiabatic boundary condition,the average air temperature in the container is rapidly stabilized;the gas pressure under the two boundary conditions reaches uniformity quickly.The detailed temperature,pressure distribution cloud diagram,and variation curve of the average temperature,average pressure with time were given and discussed.
出处
《软件导刊》
2018年第2期154-157,共4页
Software Guide
关键词
pVTt
边界条件
温度云图
压力云图
仿真实验
pVTt
temperature cloud diagram
pressure cloud diagram
simulation experiment
