Numerical Study of Spherical Vapor Layer Growth Due to Contact of a Hot Object and Water

سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 51

فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

JR_JHMTR-5-2_004

تاریخ نمایه سازی: 24 شهریور 1403

چکیده مقاله:

Vapor film formation and growth due to contact of a hot body and other liquids arises in some industrial applications including nuclear fuel rods, foundry and production of paper.The possibility of a steam explosion remains in most of these cases which may result in injuries and financial damage. Since this phenomenon is important, this study deals vapor layer forming, growth and its internal pressure are investigated. A mathematical model of a molten spherical droplet immersed in water is developed, and results of the numerical solution are discussed. The effects of changing various characteristics (e.g. hot body size, temperature, and hydrostatic effects, as well as temperature of bulk fluid) are investigated. These parameters impact the vapor layer size, vapor internal pressure, and the saturated temperature at the interface between vapor & liquid phases. Finally, conclusions indicate that internal vapor pressure jump, being up to several times larger than that of the initial condition. These pressure pulses and related vapor layer thickness variations could cause thermal fragmentation of the droplet which in turn results in strong pressure shock build-up due to small pieces of the droplet in contact with the water, which could then escalate to become a propagating large scale vapor explosion. The vapor explosions could be hazardous and endanger the system safety.

نویسندگان

Ali Jahangiri

Faculty of Mechanical & Energy Engineering, Shahid Beheshti University, A.C., Tehran, Iran

مراجع و منابع این مقاله:

لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :
  • Berthoud G. Vapor explosions, Annual Review of Fluid Mechanics. ۳۲, ...
  • R. Thiery, L. Mercury, Explosive properties of water in volcanic ...
  • M. Ragheb, Chernobyl accident”, The history of Chernobyl nuclear power ...
  • K. Okuyama, S. Tsukahara, N. Morita, Y. Iida, Transient behavior ...
  • L.S. Nelson, P.M. Duda, Steam explosion experiments with single drops ...
  • X. Cao, R. Hajima, K. Furuta, S. Kondo, A numerical ...
  • G. Ciccarelli, D.L. Frost, Fragmentation mechanisms based on single drop ...
  • Y. Abe, H. Nariai, Microscopic film collapse behavior at trigger ...
  • Y. Abe, H. Nariai, Y. Hamada, The trigger mechanism of ...
  • A.A. Gubaidullin, I. Sannikov, The dynamics and heat and mass ...
  • V.V. Glazkov, V. Grigor’ev, V.G. Zhilin, Y.A. Zeigarnik, Y.P. Ivochkin, ...
  • K. Moriyama, S. Takagi, K. Muramatsu, H. Nakamura, Y. Maruyama, ...
  • I. Dergunov, A. Kryukov, A. Gorbunov, The vapor film evolution ...
  • N. Khabeev, O. Ganiev, Dynamics of a vapor shell around ...
  • A.P. Kryukov, A.K. Yastrebov, Analysis of the transfer processes in ...
  • R.P. Taleyarkhan, Vapor explosion studies for nuclear and non-nuclear industries, ...
  • A. Bejan, Convection heat transfer, John wiley & sons, (۲۰۱۳) ...
  • J.G. Collier, J.R. Thome, Convective boiling and condensation, Clarendon Press, ...
  • J.-P. Franc, J.-M. Michel, Fundamentals of cavitation, Springer Science & ...
  • S. Hartland, Surface and interfacial tension: measurement, theory, and applications, ...
  • C. Borgnakke, R. Sonntag, Fundamentals of thermo-dynamics, ۷-th edition, University ...
  • V.P. Isachenko, V.А. Osipova and A.S. Sukomel, Heat transfer in ...
  • A. Bejan, A.D. Kraus, Heat Transfer Handbook', John Wiley & ...
  • Y. Jaluria, K. Torrance, Computational heat transfer. Taylor and Francis, ...
  • W. Fritz, In VDI-Wärmeatlas, Düsseldorf Hb۲, (۱۹۶۳) ...
  • W. Wagner, A. Pruß, The IAPWS formulation ۱۹۹۵ for the ...
  • O. Rebas, H. Zait, N. Sk, E. Chitour, Prediction of ...
  • نمایش کامل مراجع