RIM tunnel

Our refractive-index-matching (RIM) fluid tunnel has a test section cross section of 0.1 x 0.1 m² and can produce water speeds from 0.03 – 1 m/s. To enable measurements with laser diagnostics, fluids are chosen to match the refractive index of the porous transparent models that are placed in the test section.  In the RIM tunnel we study experimentally internal flow and temperature fields inside these porous materials using particle image velocimetry.