  We perform dimensional reductions of type IIA and type IIB double field
theory in the flux formulation on Calabi-Yau three-folds and on $K3\times T^2$.
In addition to geometric and non-geometric three-index fluxes and Ramond-Ramond
fluxes, we include generalized dilaton fluxes. We relate our results to the
scalar potentials of corresponding four-dimensional gauged supergravity
theories, and we verify the expected behavior under mirror symmetry. For
Calabi-Yau three-folds we extend this analysis to the full bosonic action
including kinetic terms.
