1. International Research Centre for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
2. School of Mathematical and Physical Sciences, University of Technology, P.O. Box 123, Broadway, Sydney, New South Wales 2007, Australia
3. Center for Computational Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan