1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China; Mechanical and Aerospace Engineering Department, Florida Institute of Technology, Melbourne, FL 32901 e-mail:
2. Mechanical and Aerospace Engineering Department, Florida Institute of Technology, Melbourne, FL 32901 e-mail:
3. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China e-mail:
4. Mechanical and Aerospace Engineering Department, Florida Institute of Technology, Melbourne, FL 32901; School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, China e-mail:
5. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China e-mail:
6. Department of Thermal Engineering, Tsinghua University, Haidian, Beijing 100084, China e-mail: