1. Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Tianjin, P. R. China
2. State Key Laboratory of Engines, Tianjin University, Tianjin, P. R. China
3. Moe Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, P. R. China