This volume contains nineteen contributions of work, conducted since 1998 in the French - German Research Programme "Numerical Flow Simulation", which was initiated in 1996 by the Centre National de la Recherche Scientifique (CNRS) and the Deutsche Forschungsge meinschaft (DFG). The main purpose of this second publication on the research programme, is to give an overview over recent progress, and to make the obtained results available to the public. The reports are grouped, like those in the first publication (NNFM 66, 1998), under the four headings "Devel opment of Solution Techniques", "Crystal Growth and Melts", "Flows of Reacting Gases" and "Turbulent Flows". All contributions to this publication were reviewed by a board consisting ofT. Alziary de Roquefort (Poitiers, France), H. W. Buggisch (Karlsruhe, Germany), Th. Gal louet (Marseille, France), W. Kordulla (Gottingen, Germany), A. Lerat (Paris, France), R. Rannacher (Heidelberg, Germany), G. Warnecke (Magdeburg, Germany), and the editor. The responsibility for the contents of the reports nevertheless lies with the contributors.
