Figure 2: Spatial-temporal relative density of different segments along directions (a) parallel to domain ∇ T; (b), (c) perpendicular to domain ∇ T. (a₁) – (c₁) from transient microstructures of non-isothermal model and (a₂) – (c₂)from ones of isothermal model, with the color denoting the average temperature of corresponding segment.