The filtration of fluids in porous media generates hydrodynamic noise. In the paper, the features of the spectral characteristics of such noises in various samples of porous media have been experimentally investigated. Samples with different values of porosity and permeability were used. The relationship between the characteristic noise frequencies and the filtration properties of porous cores is established. In particular, it is shown that the filtering rate only affects the intensity of the filter noise, while the characteristic frequencies do not change. An increase in the permeability of a porous sample leads to a shift of the main peak in the filter noise spectrum to the high-frequency region.
43.58.+z Acoustical measurements and instrumentation
$^1$Kazan Science Center of the Russian Academy of Sciences\
$^2$Kazan Federal University
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