原油中声衰减和声速的温度特性的测量

Measurement of Acoustic Attenuation and Velocity versus Temperature in Crude Petroleum

原油是一种混合物。它的一些性质随温度而变，如原油的声衰减和声速都是温度的函数．本文使用一个换能器发射声波，另一个换能器接收声波，在实验室内测得12t－80℃之间的声波幅度值，利用插值算法，求出该温度范围内原油声衰减的温度特性曲线；利用线性拟合算法，求出原油声速的温度特性曲线。结果表明：随着温度的升高，原油的声衰减和声速都呈下降趋势，而且测量结果与换能器的灵敏度无关．

Crude petroleum is a kind of mixture, some features of which, such as acousticattenuation and acoustic speed, vary with its temperature. In our work, the acousticwave was generated by one transducer, then received by another, and the amplitudewas recorded with the petroleum temperature varying between 12wr and 8Oxi. Fromthese data, the acoustic attenuation versus the temperature is obtained by the inter-polation method, and the acoustic speed versus the temperature by the linear fit me-thod. It is found that both the acoustic attenuation constant and the acoustic speedof the crude petroleum decrease when its temperature increases- lt is also found thatthe above results are independent of the sensitivity of the transducers.