Hanwen Zhang has joined the FoaLab for the summer of 2019 for a research experience. Hanwen is an undergraduate student of Theoretical and Applied Mechanics at Peking University. His project will analyse reactive flow in a porous matrix undergoing shear. The project seeks to address a question raised by geological observations of tabular dunite bodies in mantle ophiolites: does large-scale mantle deformation lead to tabular reactive flow channels instead of the tubular ones (that are predicted by theory without shear)? The project joins together two linearised stability analyses that have previously only been studied separately. Welcome Hanwen!