1. (IAHR Member), PhD student, Department of Engineering Science and Mathematics, Luleå University of Technology, Luleå, Sweden
2. Senior Researcher, Vattenfall Research and Development, Älvkarleby, Sweden
3. Professor, Mechanical Engineering Department, University of Tehran, Tehran, Iran
4. Professor, Department of Engineering Science and Mathematics, Luleå University of Technology, Luleå, Sweden; Department of Energy and Process Engineering, Water Power Laboratory, Norwegian University of Science and Technology, Trondheim, Norway