2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/13456We present a modified description of advection-dominated accretion flows (ADAF) with a geometrical viscosity. A simplified treatment of the dynamics of the flow in the inner relativistic part is suggested and results are compared with the galactic center source Sgr A*.10 pages, 7 figures, GC98 "The Central Parsecs" conference proceedings, uses paspconf.styAstrophysicsAdvection-dominated Accretion in the Galactic Center and the Appearance of Sgr A*text