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Fundamental Theory and Apparatus for Speed of Sound Measurement System Using Cylindrical Resonator
Author(s): 
Pages: 725-728
Year: Issue:  5
Journal: Journal of Engineering Thermophysics

Keyword:  圆柱定程干涉 气相声速 实验研究;
Abstract: 气相声速是目前可测量的最精确的热物性之一,圆柱定程干涉法是极有应用前景的测量方法。本文分析了圆柱定程干涉法测量气相声速的实验原理,在此基础上研制了一套新的实验系统,由共鸣腔、压力仓、共振频率测量系统、温度和压力测量系统以及数据采集与控制系统组成。实验系统综合考虑了多种非理想因素的影响,提高了共振频率测量的信噪比,降低了测量不确定度。
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