Preliminary test of PIV system using cigarette smoke particles

Within Cluster A project experiments, we built a PIV (Particle Image Velocimetry) measurement system that can be used to measure flow velocity in a Pulsation Reactor (PR), which requires the nano-to-micron-scale tracking of particles to express flow velocity. In order to check the working ability of the high-speed camera, a preliminary test was designed. To perform a detection without using particle generators and turning the PR, the researchers considered replacing the tracking particles with cigarette smoke particles and dispersing the particles into the tailpipe through a small tube. The figures above show the imaging of smoke particles under the high-speed camera. The particle size of cigarette smoke is concentrated between 0.2 and 0.25 microns, and our experimental tracking particles range between 0.5 and 2 microns. Therefore, the preliminary test has proven that the camera will also capture the experimental tracking particles, as it can already recognize the smaller cigarette smoke particles.