Measurement of grain bulk modulus using sound speed measurements through liquid/grain suspensions
Measurement of grain bulk modulus using sound speed measurements through liquid/grain suspensions
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DOI：
10.1121/1.423511
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发表时间：
1998-10
影响因子：
2.4
通讯作者：
K. Briggs;M. Richardson;K. Williams;E. Thorsos
中科院分区：
文献类型：
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作者：
K. Briggs;M. Richardson;K. Williams;E. Thorsos
在一定条件下，当颗粒和液体的体积模量和密度已知时，Woods方程可以用来预测液体/固体颗粒悬浮液中的声速。或者，如果通过悬浮液测量声速，其中液体的体积模量以及流体和颗粒的密度是已知的，则可以估计颗粒的体积模量。实验初步验证了该方法测量颗粒体积模量的分辨率。体积模量测量是用悬浮在水中的聚苯乙烯珠，以及悬浮在高密度液体中的玻璃珠和沙粒进行的。聚苯乙烯和玻璃微珠具有已知的体积模量（分别为4.2e9和6.3e10 Nt/m2），并作为对照。聚苯乙烯（玻璃）弹珠半径的平均值ka为0.42(0.25)，其中k为液体中的声波数，a为弹珠半径。当ka接近1时，考虑对Woods方程的修正。沙粒模块…
Under certain conditions, Woods equation can be used to predict the speed of sound in liquid/solid grain suspensions when the bulk moduli and densities of the grains and the liquid are known. Alternatively, if the sound speed is measured through a suspension where the bulk modulus of the liquid and the densities of the fluid and grains are known, it is possible to estimate the grain bulk modulus. An experiment was carried out as an initial test of the resolution of measuring grain bulk modulus via this method. Bulk modulus measurements were made of polystyrene beads suspended in water, and of glass beads and sand grains suspended in a high‐density liquid. The polystyrene and glass beads had known bulk moduli (4.2e9 and 6.3e10 Nt/m2, respectively) and acted as controls. The polystyrene (glass) bead radii were such that the mean ka was 0.42 (0.25), where k is the acoustic wave number in the liquid and a is the bead radius. Corrections to Woods equation are considered as ka approaches 1. The sand grain modul...