Thermo-fluid dynamics simulations are performed to reproduce a test bench designed to assess the correct functionality of spray nozzles during the assembly phase. The nozzle sprays air at ambient temperature onto a hot surface, which subsequently cools down. A snapshot of the surface is then taken to study the temperature footprint left by the flow.

By replicating this experimental setup, we gain insights into the complex fluid dynamics of the spray nozzle under examination (in terms of inlet flow rate and velocities) and evaluating the footprint on the hot matrix.