New mathematical model of pore space as a system of coupled Helmholtz resonators was developed. The model allows to improve description of an acoustic noise spectrum, recorded in experiments with gas flow through porous media. An algorithm and code was created for simulation of fundamental frequencies of resonators. The simulation results are presented on the example of the model of Indiana Limestone pore space. The microvortices, appearing in the pores due to inertial effects, are consider as a main mechanism of an acoustic noise generation in the case of the gas flow. Provided numerical simulations (COMSOL Multiphysics) show that the microvortices are formed in the pores at low Reynolds number 1 - 10.
$^1$Schlumberger Moscow Research\
$^2$Moscow institute of physics and technology
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