Abstract
Values of the Marangoni rates of flow experimentally determined for a thin liquid pellicle found in inclined canals have been extrapolated to zero hydrostatic level differences. Comparison of the so obtained data with the rates of flow measured on horizontal canals shows a satisfactory agreement within the experimental errors. The two experimental variants differently simulate the microgravity conditions in which only surface forces continue to operate.
Authors
Tiberiu Popoviciu Institute of Numerical Analysis
E. Chifu
Babes-Bolyai University
E. Gavrila
Babes-Bolyai University
M. Salajan
Babes-Bolyai University
Keywords
microgravity; Marangoni flow; pellicle; semi infinite triangular section; rate of flow; surface tension gradient;
References
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Paper coordinates
E. Chifu, E. Gavrila, M. Sălăjan, C.I. Gheorghiu, Surface mobility of surfactant solutions, XVII. Determination of Marangoni rate of flow in simulated zero gravity conditions, J. Rom. Colloid Surface Chem. Assoc., 2 (1997) 25-29.
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J. Roum. Colloid Surface Chem. Assoc.
Publisher Name
Almanahul Banatului
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[2] E. Chifu and I. Albu, Studia Univ. Babes-Bolyai Chem., 1968, 1, 99.
[3] E. Chifu and I. Stan, Rev. Roumaine Chim., 1982, 27, 703.
[4] E. Chifu, C. I. Gheorghiu and I. Stan, Rev. Roumaine Chim., 1984, 29, 31.
[5] E. Chifu, I. Albu, C.I. Gheorghiu, E., Gavrila, M., Salajan and M. Tomoaia-Cotisel, Rev., Roumaine Chim., 1986, 31, 105; E. Chifu, C. I. Gheorghiu and I. Stan, in VI. Internationale Tagung uber Grenzflachenaktive Stoffe, Akademie Verlag, Berlin, 1987, p. 211.
[6] E. Chifu, Roum. Chem. Quart. Rev., 1993, 1, 33.
[7] E. Chifu, C. I. Gheorghiu, M. Salajan and E. Gavrila, Proceedings of the Second International Thermal Energy Congress, Agadir, Marocco, June 1995, vol. II, p. 832-836, Eds. E. Bilgen, A. Mir, T.H. Nguyen and P. Vassear, ITEC 95, Ecole Polytechnique de Montreal Publ., 1995.
[8] L.Regel, Science des Materiaux dans l’espace, Technique et Documentation, Lavoisier, Paris, 1985.
[9] NASA Technical Memorandum 4098, Microgravity Science and Applications Bibliography, 1988 Revision, NASA, Wushington, DC, 1989, 84, pp. NASA Technical Memorandum 4192, Microgravity Science and Applications Bibliography, 1989 Revision, NASA, Washington, DC, 1990, 76 pp; NASA Technical Memorandum 4283, Microgravity Science and Applications Bibliography, 1990 Revision, NASA, Washington, DC, 1991, 83 pp.
[10] NASA Technical Memorandum 4068, Microgravity Science and Applications Program Tasks, 1987 Revision, NASA Washington, dc, 1988, 268 pp: NASATechnical Memorandum 4097, Microgravity Science and Applications Program Tasks, 1988 Revision, NASA, Washington, DA, 1989, 308, pp; NASA Rechnical Memorandum 4191, Microgravity Science and Applications Program Tasks, 1989 Revision, NASA, Washington, DC, 1990, 252 pp; NASA Technical Memorandum 4191, Microgravity Science and Applications Program Tasks, 1990 Revision, NASA, Washington, DC, 1991, 270 pp.
[11] E. W. Otto, Chem. Engn. Progr. Symp. Ser., 1966, 62, 158.
[12] E. Chifu “Surface Flow of Liquids in the Absence of Gravity”, 19+20 pp. proposal selected by NASA’s Office of Aeronautics and space Technology, 1977.
[13]***** “MATLAB user’s guide”, The MathWorks Inc., Natick, MA, 1993.
[14] S. Ross and I. Morrison, “Colloidal systems and Interfaces”, p. 112, J. Willey, New York, 1988.
[15] D. Villers and J. K. Platten, Phys. Chem. Hydrodyn., 1987, 8, 173