Abstract:
The results of an experimental study of dynamics of the formation of liquid-drop aerosol cloud during the destruction of a spherical liquid core with an initial volume of 2–80 ml during its gravitational sedimentation are presented. The system of similitude criteria which determines the dynamics of the destruction of a liquid macro-volume with the formation of a polydisperse liquid-drop aerosol cloud was derived by the Rayleigh method. It is shown that the prevailing mechanism of the decay of the liquid macro-volume is the development of Rayleigh–Taylor instability when the critical value of the Bond number is reached. A criterion equation is derived for determining the distance passed by a liquid macro-volume to its complete destruction from the Bond number characterizing the influence of surface tension forces. The maximum droplet size in the aerosol cloud was estimated depending on the critical value of the Weber number.
Keywords:
liquid macro-volume, gravitational sedimentation, aerosol cloud, Rayleigh-Taylor instability, Bond number, Weber number, experimental study
References:
- Tlyasheva R.R., Solodovnikov A.V. Metody prognozirovaniya avarijnyh situatsij s obrazovaniem oblakov toplivovozdushnyh smesej na predpriyatiyah neftepererabotki // Neftegazovoe delo. 2006. N 1. P. 1–7.
- Asovskij V.P. Osobennosti tusheniya lesnyh pozharov vertoletami s ispol'zovaniem podvesnyh vodoslivnyh ustrojstv // Nauch. vestn. MGTU GA: Aeromekhanika i prochnost'. 2009. N 138. P. 142–149.
- Arhipov V.A., Zharova I.K., Kozlov E.A., Tkachenko A.S. Prognozirovanie ekologicheskih posledstvij rasprostraneniya oblaka toksichnyh aerozolej v rajonah padeniya otrabotannyh stupenej raket-nositelej // Optika atmosf. i okeana. 2015. V. 28, N 1. P. 89–93.
- Arkhipov V.A., Kozlov E.A., Titov S.S., Tkachenko A.S., Usanina A.S., Zharova I.K. Evolution of a liquid-drop aerosol cloud in the atmosphere // Arab. J. Geosci. 2016. V. 9, N 114. P. 1–10.
- Meshkov E.E., Oreshkov V.O., Yanbaev G.M. Obrazovanie oblaka kapel' pri razrushenii vodyanogo yadra v protsesse svobodnogo padeniya // Pis'ma v zhurn. tekhn. fiz. 2011. V. 37, N 15. P. 79–86.
- Volkov P.C., Zabelin M.V., Kuznetsov G.V., Strizhak P.A. Osobennosti transformatsii vodyanyh snaryadov pri dvizhenii cherez vysokotemperaturnye produkty sgoraniya // Pis'ma v zhurn. tekhn. fiz. 2016. V. 42, N 5. P. 65–73.
- Nakoryakov V.E., Kuznetsov G.V., Strizhak P.A. O predel'nyh poperechnyh razmerah kapel'nogo oblaka pri razrushenii vodyanogo massiva v protsesse padeniya s bol'shoj vysoty // Dokl. AN. 2017. V. 475, N 2. P. 145–149.
- Nakoryakov V.E., Kuznetsov G.V., Strizhak P.A. Deformatsiya vodyanogo snaryada pri ego svobodnom padenii v vozduhe // Dokl. AN. 2016. V. 467, N 5. P. 537–542.
- Reyssat E., Chevy F., Biance A.L., Petitjean L., Quere D. Shape and instability of free falling liquid globules // Europhys. Lett. 2007. P. 34005-1–34005-5.
- Ustanovka dlya issledovaniya dinamiki razrusheniya sfericheskogo makroob"ema zhidkosti pri svobodnom padenii v vozduhe: Pat. 2705965. Russia, MPK B01L 99/00, G01N 21/85. Arhipov V.A., Basalaev S.A., Bulavko A.N., Zolotorev N.N., Perfil'eva K.G., Polenchuk S.N.; NI Tom. gos. un-t. N 2019119472; Zayavl. 20.06.2019; Opubl. 12.11.2019. Byul. N 32.
- Usanina A., Perfilieva K., Zolotorev N., Basalaev S., Arhipov V. Effect of surfactant on destruction dynamics of the liquid macro-volume // AIP Conf. Proc. 2019. V. 2135. P. 020059-1–6.
- Gonor A.L., Rivkind V.Ya. Dinamika kapli // Itogi nauki i tekhniki. Ser. Mekhanika zhidkosti i gaza. M.: VINITI, 1982. V. 17. P. 86–159.
- Nigmatulin R.I. Dinamika mnogofaznyh sred. Part 1. M.: Nauka, 1987. 464 p.
- Sternin L.E., Shrajber A.A. Mnogofaznye techeniya gaza s chastitsami. M.: Mashinostroenie, 1994. 320 p.
- Sedov L.I. Metody podobiya i razmernosti v mekhanike. M.: Nauka, 1977. 440 p.
- Zhang J., Meng Y. Stick–slip friction of stainless steel in sodium dodecyl sulfate aqueous solution in the boundary lubrication regime // Tribol Lett. 2014. V. 56, N 3. P. 543–552.
- Arhipov V.A., Vasenin I.M., Usanina A.S, Shrager G.R. Dinamicheskoe vzaimodejstvie chastits dispersnoj fazy v geterogennyh potokah. Tomsk: Izd. dom Toms. gos. un-ta, 2019. 328 p.