1. Department of Mechanical Engineering , Iowa State University , 2529 Union Dr , Ames , IA 50011-2030 , USA
2. Department of Chemical and Biological Engineering , Iowa State University , 618 Bissell Rd , Ames , IA 50011-1098 , USA
3. SABIC , Urmonderbaan 22 , P.O. Box 319 , 6160 AH , Geleen , The Netherlands