Development of Digital Vector Velocimetry Method and Its Application to Lid Driven Rotating Flow

Advances in the visualization and analysis of boundary layer flow in swimming fish

“…The particle tracking algorithm, which was independently developed by the author, was found to be similar to algorithms developed earlier by Kim and Chen (1992) and Wernet (1993) for particle tracking in general flows, however significant differences and advances exist. In particular, the mathematical particle tracking problem is itself transformed into an image processing problem, which simplifies the process.…”

“…The method of calculating all possible tracks as a starting point for particle tracking was also employed by Kim and Chen (1992) and Wernet (1993). Kim and Chen (1992) go on to produce a different sort of track image, which they call a 'digital vectorgram', using Cartesian vector components rather than the polar coordinates used in this investigation.…”

“…This technique reduces the number of calculations needed to produce the track plot. Nevertheless, Kim and Chen (1992) only use the technique to determine average velocities in square sub-windows, as in conventional DPIV. Rather than scoring each potential track, they determine the center of intensity on their digital vectorgram.…”