An experimental and theoretical study of the mixing characteristics of a periodically reoriented irrotational flow BY GUY METCALFE1,*, DANIEL LESTER1, ALISON ORD2,6, PANDURANG KULKARNI3, MURRAY RUDMAN4, MIKE TREFRY5,6,

BY GUY METCALFE1,*, DANIEL LESTER1, ALISON ORD2,6, PANDURANG KULKARNI3, MURRAY RUDMAN4, MIKE TREFRY5,6, BRUCE HOBBS2,6, KLAUS REGENAUR-LIEB2,6,7 AND JEFFERY MORRIS3 1Commonwealth Scientific and Industrial Research Organization (CSIRO ) Division of Materials Science and Engineering, PO Box 56, Graham Road, Highett, Victoria 3190, Australia 2CSIRO Division of Exploration and Mining, 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia 3City College of New York, Levich Institute and Department of Chemical Engineering, 140th Street & Convent Avenue, New York, NY 10031, USA 4CSIRO Division of Mathematical and Information Sciences, Private Bag 33, Clayton South, Victoria 3169, Australia 5CSIRO Division of Land and Water, Private Bag 5, Wembley, Western Australia 6913, Australia 6University of Western Australia, School of Earth and Environment, 35 Stirling Highway Crawley, Perth, Western Australia 6009, Australia 7Western Australian Geothermal Centre of Excellence, 35 Stirling Highway Crawley, Perth, Western Australia 6009, Australia