Perturbation velocities, often denoted as and , are components of the velocity field in a fluid flow that represent small disturbances or variations from the mean or freestream flow velocity. These perturbations are typically much smaller than the main flow velocity and are used to analyze and describe deviations or fluctuations in the flow field.Â
- Total velocity (V) in m/s
- Freestream velocity (V∞) in m/s
- Horizontal Perturbation Velocity (û) in m/s
- Vertical Perturbation Velocity (v̂) in m/s