1. Department of Mechanical Engineering and Aeronautics, City University of London, Northampton Square, ECIV 0HB London, U.K.
2. Afton Chemical Limited, London Road, Bracknell, RG12 2UW Berkshire, U.K.
3. Lehrstuhl für Technische Thermodynamik, Freiedrich-Alexander Univeristy Erlangen-Nürnberg, Am Weichselgarten 8, D-91058 Erlangen-Tennenlohe, Germany
4. Afton Chemical Corporation, 500 Spring Street, Richmond, Virginia 23219, United States
5. Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 601 W Main Street, Richmond, Virginia 23284, United States