Multi-epoch snapshots of the hydrodynamical simulation from energy injection mimicking core-collapse supernova. The initial model is a 15 ﹩{{\rm{M}}}_{\odot }﹩ star at solar metallicity, evolved with mass loss but no rotation, and employing a nuclear network of 22 isotopes. We show the density (top row), temperature (middle row), and velocity (bottom row), vs. Lagrangian mass (left column) and radius (right column). In each panel, the solid line shows the MESA results and the dashed line the V1D results.