This dataset contains the results of simulations described in the Physical Review Fluids article "Double-diffusive transport in multicomponent vertical convection". The data is in the form of a zip containing self-explanatory Jupyter notebooks, which can also be found at the Github repository open_DDVC_dataThis dataset contains the full data needed to run the notebooks from scratch, with simulation output contained in the folders Sc10 and Sc100 (and its subfolders) in HDF5 format.