Dynamical Modeling of circumstellar Outflows

A.J. Fleischer, J.M. Winters, and E. Sedlmayr

Invited talk presented at the IAU Symposium 191: AGB Stars, August 27th - September 1st 1998, Montpellier, France

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Abstract:

We review dynamical models of circumstellar dust shells around long-period variables which include time-dependent hydrodynamics and a detailed treatment of dust formation, growth and evaporation. Important effects caused by the complex interaction between the dynamics of the pulsating atmosphere and the dust complex which only can be revealed in the dynamical approach are summarized. Special emphasis is given to the treatment of the dust and gas opacity.