Redistribution of mass during penetration of a non-uniform cloud into an accelerating gas layer

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Abstract

The unsteady axisymmetric motion of an ideal perfect gas is numerically simulated, arising from the interaction of a spherical cloud with a gas layer that was initially in gravitational equilibrium in a constant gravitational field. The cloud matter is considered to contain an impurity, the particles of which serve as markers and do not affect the motion of the medium. It has been established that the most massive central part of the condensation is deeply immersed inside the layer, while the parameters of the cumulative jet significantly depend on the gas density at the periphery of the cloud. Under the assumption that the impurity substance is optically thin to radiation, the intensity distribution in the picture plane is determined and the direction of the maximum intensity value is revealed.

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About the authors

K. V. Krasnobaev

Lomonosov Moscow State University; Space Research Institute of the RAS (IKI)

Author for correspondence.
Email: kvk-kras@list.ru
Russian Federation, Moscow; Moscow

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Supplementary files

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2. Fig. 1. Scheme of clot penetration into the layer. Dashed line – contact gap.

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3. Fig. 2. Isochores of the medium (top) and impurity (bottom) at time t = 2; Ad = 20, Bd = –0.5.

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4. Fig. 3. Isochores of the medium (top) and impurity (bottom) at time t = 8; Ad = 20, Bd = –0.5.

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5. Fig. 4. Isochores of the impurity at the stage of formation of the cumulative jet at times t = 10, 12, 14 (Ad = 20, Bd = –0.5).

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6. Fig. 5. Coordinate xʹ in the picture plane.

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7. Fig. 6. Dependence Iν(xʹ) at the stage of cavity formation. Dashed line – intensity distribution at t = 0.

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8. Fig. 7. Dependence Iν(xʹ) at the stage of jet formation.

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