دانلود مقاله ISI انگلیسی شماره 79086
عنوان فارسی مقاله

یک الگوریتم سریع برای شبیه سازی 3D لایه بندی حرارتی مهار نیروگاه های هسته ای در استخر

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
79086 2014 12 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
A fast algorithm for 3D simulation of thermal stratification in containment pools of nuclear power plants
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Computers & Mathematics with Applications, Volume 67, Issue 12, July 2014, Pages 2228–2239

کلمات کلیدی
شبیه سازی ایمنی راکتور هسته ای؛ معادلات بوسینسک؛ روش تقسیم
پیش نمایش مقاله
پیش نمایش مقاله یک الگوریتم سریع برای شبیه سازی 3D لایه بندی حرارتی مهار نیروگاه های هسته ای در استخر

چکیده انگلیسی

Safety analysis is of ultimate importance for the operation of Nuclear Power Plants (NPP). Experiments even on a pilot scale are quite expensive and therefore numerical simulations play a major role in this analysis. They allow to predict the behaviour of NPP systems under different operational and accident conditions and to develop proper action plans for minimizing the risks of accidents, and minimizing the consequences of possible accidents. For a proper risk assessment and development of emergency plans, a very large number of scenarios have to be simulated, achieving acceptable accuracy for the critical parameters, such as radioactive pollution and temperature. The existing software tools are either very simplistic and therefore quite inaccurate or they use general CFD codes that makes them very slow. This paper presents a customized algorithm and corresponding software tools for simulation of non-isothermal flows in the containment pool of a NPP. It first summarizes the requirements for such simulation tools and then presents the new algorithm which, in the opinion of the authors, is a proper compromise between accuracy and efficiency for solving such problems. It uses a Fictitious Domain Method (FDM) to impose the boundary conditions, a Cartesian finite volume discretization combined with a Domain Decomposition (DD) technique, and a factorized perturbation of the incompressibility constraint proposed recently in Guermond and Minev (2010). Finally, results from numerical simulations in idealized and realistic geometries are presented and discussed.

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