Determination of the Near Wall Flow of a Multi-Stage Tesla Diode Using PIV and PTV


  • Yeganeh Saffar University of Alberta, Canada
  • Shadi Ansari University of Alberta, Canada
  • Reza Azadi University of Alberta, Canada
  • Jan Raffel Institute of Turbomachinery and Fluid Dynamics, Germany
  • David Nobes University of Alberta, Canada
  • Reza Sabbagh University of Alberta, Canada



Particle image velocimetry (PIV) and particle tracking velocimetry (PTV) are two popular methods to measure the velocity in complex geometries such as the Tesla valve. This paper provides an investigation on the application of a tessellation meshing method for interpolating non-uniform velocity vectors calculated using PTV. The procedure to apply this method containing mask generation and mesh study is described. The results are compared to the PIV results particularly where the near wall results are important. The result of the flow field calculated by the application of the tessellation method on the PTV results are presented for a two-stage Tesla valve operated in the range of Re = 100 to 600 both in forward and reverse configuration.






Micro Flows