Fuel coolant interaction in lmfbr accident analysis PDF Download
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Author: A. B. Albert Barnett Reynolds
Publisher:
ISBN:
Category :
Languages : en
Pages : 86
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Author: A. B. Albert Barnett Reynolds
Publisher:
ISBN:
Category :
Languages : en
Pages : 86
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Book Description
Author: A. B. Albert Barnett Reynolds
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Book Description
![Heat Transfer and Fluid Flow Aspects of Fuel--coolant Interactions. [LMFBR]. PDF](https://books.google.com/books/content/images/frontcover/0XeVwgEACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages :
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A major portion of the safety analysis effort for the LMFBR is involved in assessing the consequences of a Hypothetical Core Disruptive Accident (HCDA). The thermal interaction of the hot fuel and the sodium coolant during the HCDA is investigated in two areas. A postulated loss of flow transient may produce a two-phase fuel at high pressures. The thermal interaction phenomena between fuel and coolant as the fuel is ejected into the upper plenum are investigated. A postulated transient overpower accident may produce molten fuel being released into sodium coolant in the core region. An energetic coolant vapor explosion for these reactor materials does not seem likely. However, experiments using other materials (e.g., Freon/water, tin/water) have demonstrated the possibility of this phenomenon.
![Calculational Advance in the Modeling of Fuel-coolant Interactions. [LMFBR]. PDF](https://books.google.com/books/content/images/frontcover/uvqcnQAACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages :
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A new technique is applied to numerically simulate a fuel-coolant interaction. The technique is based on the ability to calculate separate space- and time-dependent velocities for each of the participating components. In the limiting case of a vapor explosion, this framework allows calculation of the pre-mixing phase of film boiling and interpenetration of the working fluid by hot liquid, which is required for extrapolating from experiments to a reactor hypothetical accident. Qualitative results are compared favorably to published experimental data where an iron-alumina mixture was poured into water. Differing results are predicted with LMFBR materials.
Author: T. G. Theofanous
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Category : Liquid metal fast breeder reactors
Languages : en
Pages : 306
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Author: Mujid S. Kazimi
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Category : Fast reactors
Languages : en
Pages : 538
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Rapid generation of high pressures and mechanical work may result when thermal energy is transferred from the hot molten nuclear fuel to the coolant in an LMFBR accident. Such energetic thermal interactions are facilitated by the large heat transfer area created when molten fuel is fragmented in the coolant. Two aspects of the molten fuel coolant interaction problem are investigated: (1) the effects of gas/vapor blanketing of the fuel on post-fragmentation generation of pressure and mechanical work, and (2) the mechanism of the fragmentation of the molten fuel as it contacts the coolant. A model developed at Argonne National Laboratory to analyze fragmentation-induced energetic fuel-coolant interactions is modified to allow for gas/vapor blanketing of the fuel. The modified model is applied to a. hypothetical accident involving an FFTF subassembly. The results indicate that high shock pressures are not necessarily precluded by gas/vapor blanketing of the fuel. However, the generation of mechanical work is greatly reduced. A model is developed to simulate the dynamic growth of the vapor film around a hot spherical particle which has been suddenly immersed in a coolant. The model is applied to various cases of hot spheres in water and in sodium. A fragmentation mechanism based on the ability of the pressure pulsations of the vapor film to induce internal cavitation in the molten material is shown to predict the reported fragmentation behavior of drops of several hot molten materials in water and sodium.
Author:
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Category : Nuclear energy
Languages : en
Pages : 658
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Author:
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ISBN:
Category : Nuclear engineering
Languages : en
Pages : 118
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Author: United States. Energy Research and Development Administration
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Category : Power resources
Languages : en
Pages : 716
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Author: United States. Energy Research and Development Administration
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ISBN:
Category : Medicine
Languages : en
Pages : 776
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