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Dust formation in brown dwarf atmospheres under conditions of driven turbulence

Please always quote using this URN: urn:nbn:de:0297-zib-7294
  • Based on the knowledge gained from direct numerical simulations which are only possible in the microscale regime, a concept of driven turbulence is presented which allows to enter the mesoscopic scale regime. Here, dust formation under stochastic hydro- and thermodynamic conditions is studied: constructively superimposed stochastic waves initiate dust formation by the creation of singular nucleation events. It, hence, results a varying mean grain size and dust density in space and time. The newly formed dust changes the thermodynamic behavior from almost isotherm to adiabatic and chemically depletes the gas phase.

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Metadaten
Author:Christiane Helling, Rupert Klein, Peter Woitke, Erwin Sedlmayr
Document Type:ZIB-Report
Tag:dust formation; stochastic boundaries; turbulence modelling
MSC-Classification:85-XX ASTRONOMY AND ASTROPHYSICS (For celestial mechanics, see 70F15) / 85-08 Computational methods
85-XX ASTRONOMY AND ASTROPHYSICS (For celestial mechanics, see 70F15) / 85Axx Astronomy and astrophysics (For celestial mechanics, see 70F15) / 85A20 Planetary atmospheres
Date of first Publication:2003/03/19
Series (Serial Number):ZIB-Report (03-07)
ZIB-Reportnumber:03-07
Published in:Appeared in: N.-E. Piskunov, W.-W. Weiss, D.-F. Gray (eds.) Modelling of Stellar Atmospheres, IAU Symp. -210, 2003
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