RAYLEIGH-TAYLOR INSTABILITY OF A DUSTY GAS

Roman Savelyev, Rosanov Nikolay Nikolaevich, George Sochilin, Sergey A. Chivilikhin

2011 , VOLUME 11, NUMBER 3 ( MAY-JUNE )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

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Nikiforov
Vladimir O.
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RAYLEIGH-TAYLOR INSTABILITY OF A DUSTY GAS

R. Savelyev, N. N. Rosanov, G. Sochilin, S. A. Chivilikhin

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Abstract

Interface instability of «gas+dust» system was explored. A numerical solution of the dispersion equation,
connecting the perturbation wave numbers and its growth rates was found. It was shown that dust density
decreasing, as well as the size of the dust particles increasing, reduces the rate of the instability evolution. The gas viscosity was shown to decrease the rate of perturbation growth with large wave numbers.

Keywords: Rayleigh-Taylor instability, sedimentation, dispersion equation, viscosity

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