Critical regime of gravity currents flowing in non-rectangular channels with density stratification Chiapponi, L. ; Ungarish, M. ; Longo, S. ; Di Federico, V. ; Addona, F. Abstract Publication: Journal of Fluid Mechanics Pub Date: April 2018 DOI: 10.1017/jfm.2017.917 Bibcode: 2018JFM...840..579C