Characterization of the trilobite hydrodynamic particle separation microchip with PIV
Endre Joachim Mossige (Mathematic Department, UiO/Trilobite Microsystems, Kristiansand, Norway), will present us some aspects of his PhD work.
A hydrodynamic micro particle separator has been tested by means of streakline visualizations and Particle Image Velocimetry (PIV) for different flow configurations. By adjusting the pressure drop and the Reynolds number, it is possible to determine the thickness of a flow layer that ends up as permeate. The results of the streakline visualizations show that the permeate flow thickness decreases with decreasing pressure drop between the inlet and the permeate outlet. Increasing the Reynolds number has the same effect. An ensemble averaged PIV method was used to extract the velocity fields from the image data. By visual inspection of the velocity vector plots, it was found that the location of the stagnation points on the separator separator depend on the Reynolds number.