Accretion disks around stellar and central galactic black holes are crucial for the production of enormous amounts of energy; the manifestations of accretion can then be observed, usually at very short wavelengths. These disks very often give rise to astrophysical jets coming from the vicinity of the central object. Using established multidimensional programs and codes, we create a model of such an accretion, incorporating effects leading to the jet production. We will also calculate the observable effects of accretion on some types of black holes, in particular the total luminosity of this process and its distribution in different spectral regions.