 Hydroxyl tagging velocimetry

Hydroxyl tagging velocimetry (HTV) is an advanced experimental technique used to measure fluid velocity fields in various fluid dynamics applications. It combines laser-induced fluorescence and tagging methods to visualize and quantify the flow of fluids, particularly in turbulent or complex flows. ### Key Components of Hydroxyl Tagging Velocimetry: 1. **Hydroxyl Tagging**: The method typically involves tagging specific molecules in the fluid with hydroxyl radicals (OH).