The test section air velocity in a wind tunnel refers to the speed or magnitude of the airflow within the specific region of the wind tunnel where aerodynamic or fluid dynamics experiments are conducted. The test section is the part of the wind tunnel where models, aircraft, vehicles, or other objects are placed to study their aerodynamic characteristics or the flow behavior around them.
- V2 is the velocity of the airflow at a specific cross-sectional area (typically downstream) within the wind tunnel or flow duct (in meters per second, m/s).
- V1 is the velocity of the airflow at another cross-sectional area (typically upstream) within the same wind tunnel or flow duct (in meters per second, m/s).
- A1 and A2 are the respective cross-sectional areas of the wind tunnel or flow duct at the two locations (in square meters, m²).