1. Applied Research Lab, Pennsylvania State University, College Park, PA 16802 e-mail:
2. National Energy Technology Laboratory, Morgantown, WV 26505 e-mail:
3. National Energy Technology Laboratory, Pittsburgh, PA 15236 e-mail:
4. Mechanical and Nuclear Engineering Department, Pennsylvania State University, College Park, PA 16802 e-mail:
5. School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN 47907 e-mail: