DENISIS - A 3-DIMENSIONAL PARTIALLY-IONIZED DUSTY MAGNETOPLASMA CODE

The highly involved macroscopic low-frequency dynamics of partially io nized dusty plasmas can be studied by means of computational fluid sim ulations. We derived a general set of numerically tractable balance eq uations taking into account mass, momentum and energy conservation. On the grounds of these equations we developed a quasi-neutral compressi ble three-dimensional multi-fluid code that integrates the closed set of equations for the electron, ion, dust and neutral components. The i ntegration scheme of this explicit code (DENISIS = Dust Electron Neutr al Ion Self-consistent Integration Scheme) is based on the Leapfrog an d Dufort-Frankel method modified by a numerically damped treatment of the nonconservative terms in the balance equations. The applicability of the code is illustrated by modelling characteristic plasma phenomen a as wave and instability processes. (C) 1998 Elsevier Science B.V.