1. Department of Mechanical Engineering, California State University, Los Angeles, Los Angeles, California 90032, USA
2. SAP Americas Inc., Scottsdale, Arizona 85251, USA; School of Mathematical and Statistical Sciences, Arizona State University, Tempe, Arizona 85287, USA; and Environmental Fluid Dynamics Laboratories, Department of Civil Engineering and Geological Sciences, The University of Notre Dame, South Bend, Indiana 46556, USA
3. Dipartimento di Ingegneria Meccanica, Universita' di Roma “Tor Vergata”, Via del Politecnico 1, 00133, Roma, Italy and PoF, University of Twente, 7500 AE Enschede, The Netherlands