Dust particle ejection from the surface of a gas-filled cavity
N.Yu. Bykov1, V.V. Zakharov2,1, I.A. Keresten1, M.A. Nikitin1, N.V. Obraztsov1, D.N. Tonkov1
1Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia
2Paris Observatory, Paris, France
Keywords: comet gas-duct atmosphere, dust ejection, gas outflow into vacuum, direct statistic modeling method
Abstract
A direct stastistic modeling method was applied for simulation of dynamics for a “gas - dust particle” system within the problem of study for near-core gas-dust atmopshere of a comet. The paper considers the gas-dynamic mechanism of dust particle ejection from the comet core surface. This assumes the esistance of a dust-coated cavity which is filled by sublimation products from the ice-core components. Calculation offers the data on dust particle velocity as a fuction of key parameters. The ejection velocity for a dust particle is described by one general parameter.
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