1. Department of Mechanical Engineering, University of Glasgow, James Watt South Building, Glasgow, G12 8QQ, Scotland, UK
2. Institute of Mechanics, Bulgarian Academy of Sciences, Acad. G. Bontchev Strasse, Block 4, 1113 Sofia, Bulgaria
3. Department of Mechanical Engineering, University of Strathclyde, 75 Montrose Strasse, Glasgow, G1 1XJ, Scotland, UK
4. Institute of Fluid Flow Machinery, Polish Academy of Sciences, ul. Gen Fiszera 14, 80-952, Gdańsk, Poland; Gdynia Maritime University, Faculty of Navigation, Al. Jana Pawla II, 81-345 Gdynia, Poland
5. Institute of Fluid Flow Machinery, Polish Academy of Sciences, ul. Gen Fiszera 14, 80-952, Gdańsk,Poland; Department of Electric and Control Engineering, Technical University of Gdańsk, Narutowicza 11/12, 80-952 Gdańsk, Poland
6. Institute of Fluid Flow Machinery, Polish Academy of Sciences, ul. Gen Fiszera 14, 80-952, Gdańsk, Poland