恒定壁温pVTt标准容器气体质量数值模拟与实验

doi:10.3969/j.issn.1000-1158.2020.02.09

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Abstract Focusing on a 36m³ horizontal pVTt standard container, the intake process and homogeneous process of the gas in the container were numerically simulated in constant wall temperature and constant velocity as the inlet boundary condition. A new algorithm for calculating the average temperature in the standard pVTt container was proposed, whose name was mass temperature average. The simulation results showed that in the natural convection process after gas intake, the average mass temperature of the gas in the container slowly decreased with time in parabolic shape and tended to wall temperature, while the average pressure drops sharply and quickly reached uniformity. Through numerical simulation and experimental verification, it was found that the gas mass in the container was linear with lnT.

Key words： metrology pVTt isothermal boundary condition mass temperature average numerical simulation standard container

Received: 13 February 2019 Published: 17 February 2020

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TB937

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	LIU Ruo-xuan
	ZHU Ming-zheng
	SHEN Yu-ming

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LIU Ruo-xuan,ZHU Ming-zheng,SHEN Yu-ming. Numerical Simulation and Experiment of Gas Mass in pVTt Standard Container under Isothermal Boundary Condition[J]. Acta Metrologica Sinica, 2020, 41(2): 179-184.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.02.09 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I2/179

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