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Liquid droplets vaporization under free molecule gas beam conditions

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Sommario

La presente ricerca studia l'evaporazione di gocce liquide investite da un fascio molecolare ipertermico, rarefatto. Il fenomeno è studiato da un punto di vista non stazionario; infatti, durante la vaporizzazione, si ha una forte variazione della temperatura media della goccia con conseguente influenza sulla velocità di riduzione del diametro. Sono stati eseguiti calcoli numerici relativi alla evaporazione di gocce d'acqua in flusso di gas ipertermico per fissati valori del flusso di energia incidente. Il presente lavoro è da considerarsi come premessa teorica allo studio del fenomeno fisico di interazione superficiale gas-liquido. Inoltre, secondo C. S. Kurzius ed F. H. Raab [1], trova la sua applicazione nello studio dei metodi di eliminazione del ‘blackout’ nel rientro dei veicoli spaziali.

Summary

The present piece of research studies the vaporization of liquid droplets under rarefied gas beam conditions. The time dependent aspect of the phenomenon has been taken into account. In fact, during the vaporization, variations of the droplet's temperature, with influence upon the diameter's reduction rate, can occur. Numerical calculations relating to water droplets' vaporization have been made taking into account various values of the incident energy flux. The study should be considered as a theoretical approach to the analysis of the gas-liquid surface interaction phenomena. Moreover, according to C. S. Kurzius and F. H. Raab [1], the work can find its application in the study of the blackout suppressant methods in re-entry space vehicles.

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References

  1. C. S. Kurzius, F. H. Raab,Vaporization and decomposition kinetics of candidate re-entry blackout suppressants in low-pressure flames, Nasa CR-1330, August 1969.

  2. J. Frenkel,Kinetic theory of liquids, Dover pub. Inc., New York (1955).

    Google Scholar 

  3. J. O. Hirshfelder, C. F. Curtiss, R. B. Bird,Molecular theory of gases and liquids, (1956).

  4. R. C. Reid, T. K. Sherwood,The properties of gases and liquids, McGrow-Hill, (1966).

  5. P. A. Egelstaff,An introduction to the liquid state, Academic Press, (1967).

  6. J. R. Brock,Evaporation and condensation of spherical bodies in noncontinuum regimes, J. Phys. Chem. 68, pp. 2857–62, (1964).

    Google Scholar 

  7. D. Henderson,The theory of liquids and dense gases, Phys. Chem. Review, vol. 5 pp. 31–61, (1964).

    Article  Google Scholar 

  8. C. S. Warren,Forced convection droplet evaporation with finite vaporization kinetics and liquid heat transfer, Heat Mass Transfer, vol. 15 pp. 2077–89, (1972).

    Article  Google Scholar 

  9. N. Bellomo, M. G. Chiadò Piat,Studio teorico sull'evaporazione di gocce liquide in ambiente rarefatto, Atti Convegno AIDAA, Torino, June (1972).

  10. N. Bellomo,Evaporazione di gocce liquide in condizioni di disequilibrio termodinamico, Atti Acc. Scienze di Torino, vol. 107, pp. 459–472, (1972–73).

    Google Scholar 

  11. N. Bellomo,Kinetic Theory of Liquid Droplets Vaporization and Condensation in Rarefied Gas Conditions,Proceedings of the 9th Int. R.G.D. Symposium vol. 2, pp. F1-1–F1-10, (1974).

    Google Scholar 

  12. H. Jr. Merte,Condensation Heat Transfer, Advances in Heat transfer, Ed. T. F. Irvine and J. P. Hartnett, vol, 9, Acc. Press., N. Y., London 1973.

    Google Scholar 

  13. B. Dahneke,Cooling of particles in aerosol beams, J. Aerosol Sci., 4 pp. 147–161 (1973).

    Article  Google Scholar 

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This work, sponsored by the “Centro Studi sulla Dinamica dei Fluidi” of C.N.R., is a re-elaborated copy of a paper presented at the 6th Int. Symposium on Molecular Beams (9–12 July 1973, Cannes, France).

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Bellomo, N., Chiadò Piat, M.G. Liquid droplets vaporization under free molecule gas beam conditions. Meccanica 10, 57–60 (1975). https://doi.org/10.1007/BF02148286

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  • DOI: https://doi.org/10.1007/BF02148286

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