Preface.............................................................. 5 Introduction......................................................... 9 Chapter 1 Hydrodynamic limit - classical problems of accretion and ejection.... 13 1.1 Astrophysical introduction - accretion onto compact objects.... 13 1 1 1 Accretion disks........................................... 14 1.1.2 Standard model............................................ 17 1.1.3 ADAF, ADIOS,...