We are very pleased to welcome Dr. Emna Mejri from the National Engineering School of Tunis as a guest researcher at the Department of Hydromechanics and Modelling of Hydrosystems in September and December 2021 for four weeks each. Together with Rainer Helmig, Emna is leading a DAAD project entitled "EVASAL: Environmental applications of evaporative salt precipitation in porous media: numerical modelling and experimental investigations". During her stay, she will continue her research with the Stuttgart group.