1. Faculty of Mechanical Engineering and Naval Architecture, Univ. of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia; Head of Gas Flow Laboratory, City Gasworks Zagreb, Radnička cesta 1, 10000 Zagreb, Croatia.
2. Ph.D. Student, Faculty of Mechanical Engineering and Naval Architecture, Univ. of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia.
3. Associate Professor, Faculty of Mechanical Engineering and Naval Architecture, Univ. of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia.
4. Associate Professor, Faculty of Mechanical Engineering and Naval Architecture, Univ. of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia (corresponding author).