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Experimental Determination of Conditions for the Explosive Fragmentation of a Heterogeneous Water Droplet in Heating in a High-Temperature Gas Medium

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Journal of Engineering Physics and Thermophysics Aims and scope

An experimental study has been made of the processes of warming up, evaporation, and boiling of a heterogeneous (with a solid graphite particle) droplet of water in a flow of high-temperature (500–800 K) combustion products. The mechanism of explosive fragmentation (breakup) of the heterogeneous droplet with enhancement of vaporization on internal interfaces (during the nucleation of vapour bubbles at the graphite-particle surface) has been established. The characteristic times of heating of the heterogeneous droplet (2.5–4 mm in size) with an inclusion (in the shape of a cylindrical disk of diameter and height 2 mm) to explosive-fragmentation conditions have been determined. The times of complete evaporation of a liquid film from the inclusion during the implementation of the process of vaporization from the free exterior surface of the droplet have also been given. A significant difference of the conditions and characteristics of the investigated processes from the "graphite substrate–water droplet" system has been shown. Conditions under which the controlling share of heat to internal interfaces of the heterogeneous droplet is supplied through the liquid film or the inclusion have been determined.

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References

  1. M. N. Nikitin, Utilization of a vapor–gas mixture in fuel combustion, Prom. Énergetika, No. 12, 37–42 (2010).

  2. A. Yu. Val′dberg and K. P. Makeeva, Mechanical atomizing burners to supply a liquid to gas-purifying apparatuses, Khim. Neftegaz Mashinostroenie, No. 5, 42–44 (2010).

  3. B. N. Mar′in, V. A. Kim, O. E. Sysoev, et al. (B. N. Mar′in ed.), Surface Treatment in Metallurgy and Machine Construction [in Russian], Dal′nauka, Vladivostok (2011).

  4. E. A. Isaev, I. E. Chernetskii, L. N. Krakht, and V. S. Titov (E. A. Isaev ed.), The Theory of Control of the Pelletizing of Loose Materials [in Russian], Tonkie Naukoemkie Tekhnologii, Staryi Oskol (2012).

  5. X. Zhou, S. P. D′Aniello, and H.-Z. Yu, Spray characterization measurements of a pendent fire sprinkler, Fire Saf. J., 54, 36–48 (2012).

    Article  Google Scholar 

  6. V. I. Terekhov and M. A. Pakhomov, Heat and Mass Transfer and Hydrodynamics in Gas–Droplet Flows [in Russian], Izd. NGTU, Novosibirsk (2009).

    MATH  Google Scholar 

  7. A. Yu. Varaksin, Hydrogasdynamics and thermal physics of two-phase flows: problems and achievements, Teplofiz. Vys. Temp., 51, No. 3, 421–455 (2013).

    Google Scholar 

  8. A. Yu. Varaksin, Clustering of particles in turbulent and vortex two-phase flows, Teplofiz. Vys. Temp., 52, No. 5, 777–796 (2014).

    Google Scholar 

  9. G. V. Kuznetsov and P. A. Strizhak, Evaporation of single droplets and of a flow of atomized liquid in motion through high-temperature combustion products, Teplofiz. Vys. Temp., 52, No. 4, 597–604 (2014).

    Google Scholar 

  10. R. S. Volkov, G. V. Kuznetsov, and P. A. Strizhak, Influence of solid inclusions in liquid drops moving through a high temperature gaseous medium on their evaporation, Tech. Phys., 59, No. 12, 1770–1774 (2014).

    Article  Google Scholar 

  11. O. V. Vysokomornaya, G. V. Kuznetsov, and P. A. Strizhak, Experimental investigation of atomized water droplet initial parameters influence on evaporation intensity in flaming combustion zone, Fire Saf. J., 70, 61–70 (2014).

    Article  Google Scholar 

  12. R. S. Volkov, G. V. Kuznetsov, and P. A. Strizhak, Experimental investigation of mixtures and foreign inclusions in water droplets influence on integral characteristics of their evaporation during motion through high-temperature gas area, Int. J. Therm. Sci., 88, 193–200 (2015).

    Article  Google Scholar 

  13. G. V. Kuznetsov, P. A. Kuibin, and P. A. Strizhak, Assessment of numerical values of evaporation constants of water droplets moving in a flow of high-temperature gases, Teplofiz. Vys. Temp., 53, No. 2, 264–269 (2015).

    Google Scholar 

  14. N. B. Vargaftik, A Handbook of Thermophysics Properties of Gases and Liquids [in Russian], OOO "Stars," Moscow (2006).

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Authors and Affiliations

  1. National Research Tomsk Polytechnic University, Institute of Power Engineering, 30 Lenin Ave., Tomsk, 634050, Russia

    G. V. Kuznetsov, M. V. Piskunov & P. A. Strizhak

Authors
  1. G. V. Kuznetsov
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  2. M. V. Piskunov
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  3. P. A. Strizhak
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Corresponding author

Correspondence to M. V. Piskunov.

Additional information

Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 90, No. 3, pp. 658–666, May–June, 2017.

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Kuznetsov, G.V., Piskunov, M.V. & Strizhak, P.A. Experimental Determination of Conditions for the Explosive Fragmentation of a Heterogeneous Water Droplet in Heating in a High-Temperature Gas Medium. J Eng Phys Thermophy 90, 625–633 (2017). https://doi.org/10.1007/s10891-017-1608-8

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  • DOI: https://doi.org/10.1007/s10891-017-1608-8

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