Suscripción a Biblioteca: Guest
Atomization and Sprays

Publicado 12 números por año

ISSN Imprimir: 1044-5110

ISSN En Línea: 1936-2684

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00095 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

THE VISCOUS EFFECT ON THE TRANSIENT DROPLET DEFORMATION PROCESS UNDER THE ACTION OF SHOCK WAVE

Volumen 29, Edición 2, 2019, pp. 105-121
DOI: 10.1615/AtomizSpr.2019030070
Get accessGet access

SINOPSIS

The transient droplet deformation behaviors induced by shockwaves were experimentally recorded by high-speed shadowgraphic technique. Three Ohnesorge number (Oh) conditions (0.07, 0.32, and 0.66) and Weber number (We) ranges between 45 and 4000 were tested. Results show that the effects of viscosity on deformation are correlated with the extent of interaction inertia. At small We conditions, the time-dependent deformation (dc/d0) shows three stages before breakup. Initially, dc/d0 stays constant for all Oh conditions. dc/d0 increases as a function of time, and increased viscosity leads to a slower dc/d0 rate due to a higher rate of dissipation. A less viscous droplet shows a flat dc/d0 period, while for more viscous droplets, dc/d0 oscillates before breakup. For higher We cases, only the constant dc/d0 stage followed by a steady increase is observed, and higher viscous droplets still result in a lower dc/d0 increase rate in the second stage. (dc/d0)max decreases with the increase of viscosity at low We because the viscous dissipation consumes more inertia. However, at higher We, (dc/d0)max increases because at this We, the increase of viscosity actually postpones the breakup, resulting in a larger (dc/d0)max. The initiation time (Tini, the time scale of droplet deformation), decreases with the increase of We due to accelerated breakup through enhanced disruptive inertia. Increased Oh lengthens this time scale because a more viscous droplet consumes the inertia faster, counteracting the effect of We. This time scale variation also explains the (dc/d0)max dependence on Oh and We.

REFERENCIAS
  1. Ben, G., Liu, Y., Wen, C.Y., and Shen, H., Numerical Study on Liquid Droplet Internal Flow under Shock Impact, AIAA J., vol. 56, no. 9, pp. 1–6, 2018.

  2. Cao, X.K., Sun, Z.G., Li,W.F., Liu, H.F., and Yu, Z.H., A New Breakup Regime of Liquid Drops Identified in a Continuous and Uniform Air Jet Flow, Phys. Fluids. vol. 19, no. 5, p. 401, 2007.

  3. Cheng, S. and Chandra, S., A Pneumatic Droplet-on-Demand Generator, Exp. Fluids. vol. 34, no. 6, pp. 755–762, 2003.

  4. Choua, W.H. and Faetha, G.M., Temporal Properties of Secondary Drop Breakup in the Bag Breakup Regime, Int. J. Multiphase Flow, vol. 24, no. 6, pp. 889–912, 1998.

  5. Dai, Z. and Faeth, G.M., Temporal Properties of Secondary Drop Breakup in the Multimode Breakup Regime, Int. J. Multiphase Flow, vol. 27, no. 2, pp. 217–236, 2001.

  6. Engel, O.G., Fragmentation of Waterdrops in the Zone Behind an Air Shock, J. Res. Natl. Bur. Stand. Section A, vol. 60, no. 3, pp. 245–280, 1958.

  7. Gel’Fand, B.E., Gubin, S.A., Kogarko, S.M., and Komar, S.P., Singularities of the Breakup of Viscous Liquid Droplets in ShockWaves, J. Engin. Phys., vol. 25, no. 3, pp. 1140–1142, 1973.

  8. Gelfand, B.E., Droplet Breakup Phenomena in Flows with Velocity Lag, Prog. Energy Combust. Sci., vol. 22, no. 3, pp. 201–265, 1996.

  9. Guildenbecher, D.R., Jian, G., Chen, J., and Sojka, P.E., Characterization of Drop Aerodynamic Fragmentation in the Bag and Sheet-Thinning Regimes by Crossed-Beam, Two-View, Digital in-Line Holography, Int. J. Multiphase Flow, vol. 94, pp. 107–122, 2015.

  10. Guildenbecher,D.R., L´opez-Rivera, C., and Sojka, P.E., Secondary Atomization, Exp. Fluids, vol. 46, no. 3, p. 371, 2009.

  11. Helenbrook, B.T. and Edwards, C.F., Quasi-Steady Deformation and Drag of Uncontaminated Liquid Drops, Int. J. Multiphase Flow, vol. 28, no. 10, pp. 1631–1657, 2002.

  12. Hinze, J.O., Critical Speeds and Sizes of Liquid Globules, Flow Turbul. Combust., vol. 1, no. 1, p. 273, 1949.

  13. Hsiang, L.P. and Faeth, G.M., Near-Limit Drop Deformation and Secondary Breakup, Int. J. Multiphase Flow, vol. 18, no. 5, pp. 635–652, 1992.

  14. Jalaal, M. and Mehravaran, K., Fragmentation of Falling Liquid Droplets in Bag Breakup Mode, Int. J. Multiphase Flow, vol. 47, no. 47, pp. 115–132, 2012.

  15. Joseph, D.D., Belanger, J., and Beavers, G.S., Breakup of a Liquid Drop Suddenly Exposed to a High-Speed Airstream, Int. J. Multiphase Flow, vol. 25, nos. 6-7, pp. 1263–1303, 1999.

  16. Kindracki, J., Wola´nski, P., and Gut, Z., Experimental Research on the Rotating Detonation in Gaseous Fuels–Oxygen Mixtures, Shock Waves, vol. 21, no. 2, pp. 75–84, 2011.

  17. Liu, Z. and Reitz, R.D., An Analysis of the Distortion and Breakup Mechanisms of High Speed Liquid Drops, Int. J. Multiphase Flow, vol. 23, no. 4, pp. 631–650, 1997.

  18. Nicholls, J.A. and Ranger, A.A., Aerodynamic Shattering of Liquid Drops, AIAA J., vol. 7, no. 2, pp. 285– 290, 1968.

  19. Pilch,M. and Erdman, C.A., Use of Breakup Time Data and Velocity History Data to Predict the Maximum Size of Stable Fragments for Acceleration-Induced Breakup of a Liquid Drop, Int. J. Multiphase Flow, vol. 13, no. 6, pp. 741–757, 1987.

  20. Reinecke, W. and Waldman, G., A Study of Drop Breakup behind Strong Shocks with Applications to Flight, Avco Rep. AVSD.110.66., 1970.

  21. Reinecke, W. and Waldman, G., Shock Layer Shattering of Cloud Drops in Reentry Flight, AIAA, 13th Aerospace Sciences Meeting, 1975.

  22. Theofanous, T.G., Aerobreakup in Rarefied Supersonic Gas Flows, J. Fluids Eng., vol. 126, no. 4, pp. 516– 527, 2004.

  23. Theofanous, T.G., Mitkin, V.V., Ng, C.L., Chang, C., Deng, X., and Sushchikh, S., The Physics of Aerobreakup. II. Viscous Liquids, Phys. Fluids, vol. 24, no. 2, pp. 052103–052180, 2012.

  24. Wierzba, A., Deformation and Breakup of Liquid Drops in a Gas Stream at Nearly Critical Weber Numbers, Exp. Fluids, vol. 9, nos. 1-2, pp. 59–64, 1990.

  25. Wierzba, A. and Takayama, K., Experimental Investigation of the Aerodynamic Breakup of Liquid Drops, AIAA J., vol. 26, no. 11, pp. 1329–1335, 1988.

  26. Yang, W., Jia, M., Che, Z., Sun, K., and Wang, T., Transitions of Deformation to Bag Breakup and Bag to Bag-Stamen Breakup for Droplets Subjected to a Continuous Gas Flow, Int. J. Heat Mass Transf., vol. 111, pp. 884–894, 2017.

  27. Zhao, H., Liu, H.F., Li, W.F., and Xu, J.L., Morphological Classification of Low Viscosity Drop Bag Breakup in a Continuous Air Jet Stream, Phys. Fluids, vol. 22, no. 11, p. 4, 2010.

  28. Zhao, H., Liu, H.F., Xu, J.L., Li, W.F., and Lin, K.F., Temporal Properties of Secondary Drop Breakup in the Bag-Stamen Breakup Regime, Phys. Fluids, vol. 25, no. 5, p. 1741, 2013.

CITADO POR
  1. Zhu Wanli, Zhao Ningbo, Jia Xiongbin, Sun Chengwen, Zheng Hongtao, Effects of Airflow Velocity and Droplet Diameter on the Secondary Breakup Characteristics, AIAA Journal, 2021. Crossref

  2. Li Jianling, Shen Shuai, Liu Jinhong, Zhao Yu, Li Shengfu, Tang Chenglong, Secondary droplet size distribution upon breakup of a sub-milimeter droplet in high speed cross flow, International Journal of Multiphase Flow, 148, 2022. Crossref

  3. Kamiya Tomohiro, Asahara Makoto, Yada Tokiha, Mizuno Kyohei, Miyasaka Takeshi, Study on characteristics of fragment size distribution generated via droplet breakup by high-speed gas flow, Physics of Fluids, 34, 1, 2022. Crossref

  4. Zhu Wanli, Zheng Hongtao, Zhao Ningbo, Numerical investigations on the deformation and breakup of an n-decane droplet induced by a shock wave, Physics of Fluids, 34, 6, 2022. Crossref

Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones Precios y Políticas de Suscripcione Begell House Contáctenos Language English 中文 Русский Português German French Spain