Three-dimensional modeling of mass transfer in close binary systems with asynchronous rotation

We present the results of three-dimensional numerical simulations of mass t ransfer in semidetached binary systems in which the mass-losing star is rot ating. The cases of aligned and non-aligned asynchronous rotation of the do nor star are considered; the resulting flow patterns are compared to the sy nchronous rotation case. The main properties of the flow, such as the forma tion of a circumbinary envelope, the absence of a "hot spot" on the edge of the accretion disk, and the formation of a shock wave along the flow edge, are qualitatively similar to those obtained earlier. For the case of nonal igned, asynchronous rotation, the behavior of the disk and surrounding matt er in an established flow regime reflects changes in the boundary condition s at the surface of the donor star; in other words, a "driven disk" model i s realized in the calculations.