1. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, P. R. China
3. Institute of Materials Research and Engineering, A*Star, 2 Fusionopolis Way, Innovis, Level 9, Singapore 138634, Singapore