Mr. Denis Rakov Profile

Denis Rakov

at National Research Tomsk State Univ

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Proceedings Article | 30 November 2017 Paper

Experimental and theoretical studies of near-ground acoustic radiation propagation in the atmosphere

Vladimir Belov, Yuliya Burkatovskaya, Nikolai Krasnenko, Aleksandr Rakov, Denis Rakov, Liudmila Shamanaeva

Proceedings Volume 10466, 104661I (2017) https://doi.org/10.1117/12.2286881

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Results of experimental and theoretical studies of the process of near-ground propagation of monochromatic acoustic radiation on atmospheric paths from a source to a receiver taking into account the contribution of multiple scattering on fluctuations of atmospheric temperature and wind velocity, refraction of sound on the wind velocity and temperature gradients, and its reflection by the underlying surface for different models of the atmosphere depending the sound frequency, coefficient of reflection from the underlying surface, propagation distance, and source and receiver altitudes are presented. Calculations were performed by the Monte Carlo method using the local estimation algorithm by the computer program developed by the authors. Results of experimental investigations under controllable conditions are compared with theoretical estimates and results of analytical calculations for the Delany–Bazley impedance model. Satisfactory agreement of the data obtained confirms the correctness of the suggested computer program.

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