Figure 4
From: Effects of Optical Turbulence and Density Gradients on Particle Image Velocimetry
Instantaneous velocity fields from Adaptive Correlation PIV results for the Nearfield case, path length 0.5 m. Top panel show the vertical velocity at low optical turbulence, ΔT = 4 °C. The velocity for high optical turbulence, ΔT = 13 °C, using the same post-processing algorithm is shown on the bottom and reveals considerable noise. Color scale is in m/s and the arrows indicate velocity vectors.
