Flow Simulation 2021 expands simulation capability with rotating regions now compatible with free surfaces, enabling improved mixing and multi‑fluid studies. Transient Explorer visualises motion‑driven flow changes, while enhanced goal plots and summary table parameters make it easier to identify peak values. Scene templates streamline repeatable plot creation. Heat‑transfer studies benefit from grouped flux plots, cropped‑region scaling and goal operations for min/max/average calculations. Custom visualisation parameters can reference each other for advanced engineering calculations like dew point, improving overall analysis efficiency