کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
586545 878220 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling the two-phase cloud evolution from instantaneous flashing release using CFD
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Modeling the two-phase cloud evolution from instantaneous flashing release using CFD
چکیده انگلیسی

Computational Fluid Dynamics (CFD) approach has been successfully applied to simulate the small-scale instantaneous flashing release experiment by Pettitt. A model for dispersion of the release event is provided based on relevant theories and existing experimental data. An application of the CFD method to the dispersion simulation is illustrated. Furthermore, a new methodology based on discrete phase model for setting computational initial conditions is provided. An initial expansion and subsequent turbulence dispersion can be characteristically identified from both volume and temperature variation of the cloud obtained by the simulation. The possible mechanism for these phenomena has also been discussed and analyzed. The study deepens the understanding of the physical process of this event and provides one more reliable tool for relevant safety systems.


► We provide a feasible methodology for the prediction of an instantaneous release.
► Released cloud undergoes an initial expansion then gets into turbulence dispersion.
► A sharp decrease of cloud temperature correlates with the initial volume expansion.
► Droplet evaporation speed affects the heat and momentum change of other droplets.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Loss Prevention in the Process Industries - Volume 24, Issue 4, July 2011, Pages 420–425
نویسندگان
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