Mathi Rongen studied Applied Physics at Hogeschool Eindhoven. He started working at Philips Research Laboratories as research engineer and developed measurement set-ups for thermo-physical properties of silica glasses. In 1996 he joined Philips as development engineer responsible for improving the glass quality of TV and Lighting glass using CFD Glass Furnace Modeling. In 2006 he joined TNO Glass Group as R&D project manager. He is now senior consultant at CelSian, with a focus on executing melting trials and other customer projects in our laboratory.