Within the Multiphase Reactors Group a number of projects have been granted by the Dutch National Science Foundation (NWO) to Prof. Hans Kuipers and Dr. Niels Deen, and by the European Research Council (ERC) to Dr. Johan Padding. These projects are on the topic of Multi-Scale Modeling of momentum, mass and/or heat transfer in multi-phase systems, including gas-solid, gas-liquid and gas-solid-liquid systems. We have four vacancies for PhD students.