计量学报2025，Vol.46Issue(4)：600-606,7.DOI:10.3969/j.issn.1000-1158.2025.04.19
声学法测量气相黏度的实验方法探索
Exploration of Experimental Method for Measuring Gaseous Viscosity Using Acoustic Method
摘要
Abstract
In response to the problem that traditional viscosity measurement methods cannot achieve high-precision measurement of gas-phase viscosity in thermodynamic equilibrium,it is proposed to use acoustic methods to measure gas-phase viscosity.Acoustic method obtains gas-phase viscosity by generating resonance within the resonant chamber and analyzing the mechanism of acoustic energy dissipation.By utilizing a specially designed dual chamber structure,the proportion of viscous dissipation in acoustic energy dissipation was greatly increased,allowing viscosity to be obtained from the frequency response of the resonant chamber.The basic principles and viscosity correction methods of acoustic method for measuring gas-phase viscosity were preliminarily explored.The dissipation of acoustic energy is mainly caused by the viscous boundary layer,thermal boundary layer,and cavity volume effect.The inverse quality factor method can be used to correct the gas-phase viscosity for thermal boundary layer and cavity volume effect,obtaining more accurate gas-phase viscosity.On this basis,a complete gas-phase viscosity measurement experimental system was established,which includes a dual resonant chamber experimental body,a resonance frequency measurement system,a temperature measurement and control system,and a pressure measurement and gas distribution system,laying an experimental foundation for high-precision measurement of gas-phase viscosity in the future.关键词
气相黏度/声学法/双共鸣腔/逆品质因数法/实验系统建立Key words
gas-phase viscosity/acoustic method/double Helmholtz resonators/inverse quality factor method/establishment of experimental system分类
通用工业技术引用本文复制引用
谭颖,彭夏尧,杨震,张凯,段远源..声学法测量气相黏度的实验方法探索[J].计量学报,2025,46(4):600-606,7.基金项目
国家自然科学基金(52276169,U21B2056) （52276169,U21B2056）
