1. Research Associate, School of Mechanical Engineering, National Technical Univ. of Athens, 15780 Athens, Greece.
2. Professor Emeritus, School of Mechanical Engineering, National Technical Univ. of Athens, 15780 Athens, Greece (corresponding author). ORCID: .
3. Professor, School of Mechanical Engineering, National Technical Univ. of Athens, 15780 Athens, Greece.
4. Research Associate, School of Mechanical Engineering, National Technical Univ. of Athens, 15780 Athens, Greece. ORCID: .