基于泊肃叶定律的未知气体粘滞系数测量

doi:10.3969/j.issn.1000-1158.2024.04.12

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Abstract To study and measure the viscosity coefficient of unknown gas,a simple measuring device based on capillary was built. According to Poiseuille’s law,the relationship between gas volume flow and viscosity coefficient was established. With N2 as the calibration standard gas,the viscosity coefficients of H2,CO2 and synthetic air in the temperature range of 280~320K and the pressure range of 169~376kPa were calculated by measuring the volume flow. The reliability of this method is theoretically analyzed,and the results are compared with the viscosity coefficient in NIST database. The relative error rate of this method is in the range of ［-1.109%,1.779%］ when the differential pressure is in the range of 103~206kPa.

Key words： viscosity measurement gas viscosity coefficient;Poiseuilles law;capillary volume flow

Received: 31 October 2022 Published: 03 April 2024

PACS:

TB933

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	Articles by authors
	TANG Bowen
	PENG Yuexiang
	ZHANG Yu
	ZUO Aibin

Cite this article:

TANG Bowen,PENG Yuexiang,ZHANG Yu, et al. Measurement of Viscosity Coefficient of Unknown Gas Based on Poiseuille’s Law[J]. Acta Metrologica Sinica, 2024, 45(4): 540-545.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2024.04.12 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2024/V45/I4/540

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