1. Department of Aeronautical Engineering, Chaoyang University of Technology, Taichung 413, Taiwan
2. Taiwan Power Company, Taichung 434, Taiwan
3. Department of Mechanical Engineering, Sumbawa University of Technology, Sumbawa Besar 84371, NTB, Indonesia
4. Department of Mechanical Engineering, Lunghwa University of Science and Technology, Taoyuan 333, Taiwan