自发布里渊散射法异丙醚音速的实验测量  

Measurement of Speed of Sound of Di-Isopropyl Ether(DIPE) Using Spontaneous Brillouin Scattering Method

作　　者：郑雄[1] 张颖[1] 王升[1] 梁俐俐 何茂刚[1] 

机构地区：[1]西安交通大学热流科学与工程教育部重点实验室,西安710049

出　　处：《工程热物理学报》2015年第9期1874-1878,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.51106129);中央高校基本科研业务费专项资金资助

摘　　要：本文研制了一套基于自发布里渊散射法的流体音速测量实验系统,分析得到该实验系统温度、压力测量的不确定度分别为0.02 K,10 kPa,音速测量的扩展不确定度为0.5%。测量了标准物质正戊烷310 K到470 K饱和液体和350 K到470 K饱和气体的音速,与文献值比较得到,该实验测量值的测量偏差为2.5%左右,验证了本实验系统的可靠性与稳定性。在温度为303.15 K^453.15 K,压力达5.5 MPa范围内,对燃料添加剂异丙醚的饱和液体和过冷液体的音速进行了测量,并依据实验数据给出了异丙醚音速的经验关联式,关联式的计算偏差为0.51%(饱和液体)和0.54%(过冷液体)。In this work, a speed of sound measuring apparatus for fluids was developed, and the measuring uncertainty of temperature, pressure and speed of sound are 0.02 K, 10 kPa and 0.5%, respectively. The speed of sound of pentane from 310 K to 470 K for the saturated liquid and 350 K to 470 K for the saturated vapor was measured to verify the reliability and stability of the system. Compared with the literature data, the experimental measurement deviation is about 2.5%. The speed of sound of di-isopropyl ether was measured at the temperature from 303.15%453.15 K and at the pressure up to 5.5 MPa, including saturated and compressed liquid. The correlations in this area were proposed, and the calculation deviation of the correlations are 0.51% （saturated liquid） and 0.54% （compressed liquid）, respectively.

关 键 词：布里渊散射 异丙醚 音速 实验测量 

分 类 号：TK123[动力工程及工程热物理—工程热物理]