We study the properties of multicomponent Smoluchowski coagulation equations. These equations describe the evolution of the number density function over the d-dimensional composition space. We show that, under a self-similar scaling, all solutions localize along a line defined by the initial condition. This result holds for a large class of coagulation kernels and it can be used to reduce the analysis of multicomponent systems to one-component ones. Joint work with: Jani Lukkarinen (U. Helsinki), Alessia Nota (Gran Sasso Science Institute) and Juan Velázquez (U. Bonn).
