This webinar demonstrates how Flownex models gas turbine secondary air systems using specialized rotating-flow components, including cavities, labyrinth seals, nozzles, and rotating channels. It explains how the software predicts flow distribution, pressure losses, swirl, windage effects, and heat transfer while allowing users to incorporate custom correlations and company-specific components. The presenter showcases a secondary flow path model and highlights Flownex’s fast solving times, making it suitable for early-stage design and optimization studies. A second example uses parametric studies and Excel-based reporting to optimize cooling-hole geometry by varying angles and diameters to minimize pressure losses. Overall, the webinar highlights Flownex as a flexible, user-friendly tool for rapid secondary air system analysis, design optimization, and sensitivity studies.