18
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Errors in particle tracking velocimetry with high-speed cameras

      Preprint
      , ,

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Velocity errors in particle tracking velocimetry (PTV) are studied. When using high-speed video cameras, the velocity error may increase at a high camera frame rate. This increase in velocity error is due to particle-position uncertainty, which is one of two sources of velocity errors studied here. The other source of error is particle acceleration, which has the opposite trend of diminishing at higher frame rates. Both kinds of errors can propagate into quantities calculated from velocity, such as the kinetic temperature of particles or correlation functions. As demonstrated in a dusty plasma experiment, the kinetic temperature of particles has no unique value when measured using PTV, but depends on the sampling time interval or frame rate. It is also shown that an artifact appears in an autocorrelation function computed from particle positions and velocities, and it becomes more severe when a small sampling-time interval is used. Schemes to reduce these errors are demonstrated.

          Related collections

          Most cited references7

          • Record: found
          • Abstract: not found
          • Article: not found

          Measurement of the Interaction Potential of Microspheres in the Sheath of a rf Discharge

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Fundamentals of digital particle image velocimetry

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Recrystallization of a 2D Plasma Crystal

                Bookmark

                Author and article information

                Journal
                18 April 2011
                Article
                10.1063/1.3589267
                1104.3540
                3db0a7d4-5ef5-4e6d-925e-a24f8a100229

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                History
                Custom metadata
                6 pages, 5 figures, Review of Scientific Instruments, 2011 (In Press)
                physics.plasm-ph physics.ins-det

                Comments

                Comment on this article