1. Fluid
Mechanics Department, IFP Energies Nouvelles, 69360 Solaize, France
2. Institut
de Mécanique des Fluides de Toulouse, Université de Toulouse - CNRS, INPT, UPS - 31400 Toulouse, France
3. Department
of Mathematics, University of British Columbia, 1984 Mathematics Road, Vancouver, BC, Canada V6T 1Z2
4. Department of Chemical & Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC, Canada V6T 1Z3