1. a Universite Louis Pasteur , Institut de Mécanique des Fluides , URA CNRS 854, 2, rue Boussingault, 67000, Strasbourg, France
2. b Research Institute of the French Iron & Steel Industry, Heat Transfer, Electromagnetism & Fluid Dynamics Department , Voie Romaine, 57283, Maizières-lès-Metz Cedex, France