1. Department of Mechanical Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK
2. British Hydromechnics Research Group, Cranfield, Bedford MK43 0AJ, UK
3. Department of Marine Technology, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK
4. Institute of Thermophysics, Russian Academy of Sciences, Novosibirsk 63090, Russia