This video introduces the Henry-Fauske two-phase critical flow model, newly added in Flownex 2025 R3 to improve the accuracy of choked two-phase flow predictions. The model is particularly important for nuclear industry applications, such as loss-of-coolant accidents (LOCA) and pipe rupture scenarios, where accurate critical flow calculations are essential. The Henry-Fauske option has been integrated into restrictor and secondary loss components, allowing users to apply it directly within their simulations. A demonstration model compares Flownex predictions against Marviken experimental data and established thermal-hydraulic codes, showing that the implementation produces industry-standard critical flow rate predictions. This enhancement strengthens Flownex’s capabilities for safety analysis and transient two-phase flow simulations.