1. Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan, ROC
2. Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan, ROC
3. Department of Mechanical Engineering, Hindustan College of Science and Technology, Mathura, UP, India
4. Department of Mechanical Engineering, Debre Berhan University, Government of Ethiopia, Debre Berhan, Ethiopia