Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant)
The results of a numerical simulation of the thermal regime of an underground facility for long-term storage of spent nuclear fuel in a built-in reinforced concrete structure are presented. Two computer models were constructed in a three-dimensional formulation in the COMSOL programme. The first mod...
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ftoceandocs:oai:aquadocs.org:1834/41700 2023-05-15T15:04:51+02:00 Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) Численное моделирование теплового режима подземного объекта хранения отработавшего ядерного топлива (вариант встроенной конструкции) Amosov, P. V. Russia Arctic Россия Арктика 2021 pp.228-239 http://hdl.handle.net/1834/41700 ru rus http://vestnik.mstu.edu.ru/show-eng.shtml?art=2103 http://vestnik.mstu.edu.ru/show.shtml?art=2103 http://hdl.handle.net/1834/41700 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Three-dimensional numerical simulation Mixed convection Spent fuel Storage facility Объемное численное моделирование Смешанная конвекция Критериальные значения температуры Отработавшее ядерное топливо Объект хранения Criterion of temperature values Heat flow Тепловой поток ASFA_2015::N::Nuclear wastes ASFA_2015::A::Arctic zone Journal Contribution 2021 ftoceandocs 2023-04-06T17:07:02Z The results of a numerical simulation of the thermal regime of an underground facility for long-term storage of spent nuclear fuel in a built-in reinforced concrete structure are presented. Two computer models were constructed in a three-dimensional formulation in the COMSOL programme. The first model is based on the incompressible fluid approximation, while the second model is based on the "incompressible ideal gas" approximation. The mathematical basis of models: the continuity equation, Navier – Stokes equations averaged by Reynolds, the standard (k – ?) turbulence model, and the general heat transfer equation. Consideration of mixed convection conditions is implemented in the "incompressible ideal gas" approximation, where the air density is a function of temperature only. The most thermally stressful arrangement of spent fuel placement is investigated: U-Zr – defective – U-Be. The air rate is varied in the range from 21 to 0.656 m3/s. Numerical experiments were performed for up to 5 years of fuel storage. The principal difference between the non-stationary structure of the velocity fields predicted in the "incompressible ideal gas" model and the "frozen" picture of the aerodynamic parameters in the incompressible fluid model is emphasized. It is shown that the requirements for exceeding the temperature limit values are met when the object operates under conservative ventilation conditions (rate 0.656 m3/s) with a minimum of costs for organizing ventilation. The dynamics of heat flows directed into the rock mass through the base and from the surface of the built-in structure of the U-Zr fuel compartment to the air environment are analyzed. The predominance of the heat flow from the surface of the structure and the different times when the curves of the heat flow dynamics reach their maximum values are noted. The heat flow to the array reaches its maximum significantly faster than to the air. Представлены результаты исследования методом численного моделирования теплового режима подземного объекта ... Other Non-Article Part of Journal/Newspaper Arctic Арктика IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Arctic |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
Russian |
topic |
Three-dimensional numerical simulation Mixed convection Spent fuel Storage facility Объемное численное моделирование Смешанная конвекция Критериальные значения температуры Отработавшее ядерное топливо Объект хранения Criterion of temperature values Heat flow Тепловой поток ASFA_2015::N::Nuclear wastes ASFA_2015::A::Arctic zone |
spellingShingle |
Three-dimensional numerical simulation Mixed convection Spent fuel Storage facility Объемное численное моделирование Смешанная конвекция Критериальные значения температуры Отработавшее ядерное топливо Объект хранения Criterion of temperature values Heat flow Тепловой поток ASFA_2015::N::Nuclear wastes ASFA_2015::A::Arctic zone Amosov, P. V. Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) |
topic_facet |
Three-dimensional numerical simulation Mixed convection Spent fuel Storage facility Объемное численное моделирование Смешанная конвекция Критериальные значения температуры Отработавшее ядерное топливо Объект хранения Criterion of temperature values Heat flow Тепловой поток ASFA_2015::N::Nuclear wastes ASFA_2015::A::Arctic zone |
description |
The results of a numerical simulation of the thermal regime of an underground facility for long-term storage of spent nuclear fuel in a built-in reinforced concrete structure are presented. Two computer models were constructed in a three-dimensional formulation in the COMSOL programme. The first model is based on the incompressible fluid approximation, while the second model is based on the "incompressible ideal gas" approximation. The mathematical basis of models: the continuity equation, Navier – Stokes equations averaged by Reynolds, the standard (k – ?) turbulence model, and the general heat transfer equation. Consideration of mixed convection conditions is implemented in the "incompressible ideal gas" approximation, where the air density is a function of temperature only. The most thermally stressful arrangement of spent fuel placement is investigated: U-Zr – defective – U-Be. The air rate is varied in the range from 21 to 0.656 m3/s. Numerical experiments were performed for up to 5 years of fuel storage. The principal difference between the non-stationary structure of the velocity fields predicted in the "incompressible ideal gas" model and the "frozen" picture of the aerodynamic parameters in the incompressible fluid model is emphasized. It is shown that the requirements for exceeding the temperature limit values are met when the object operates under conservative ventilation conditions (rate 0.656 m3/s) with a minimum of costs for organizing ventilation. The dynamics of heat flows directed into the rock mass through the base and from the surface of the built-in structure of the U-Zr fuel compartment to the air environment are analyzed. The predominance of the heat flow from the surface of the structure and the different times when the curves of the heat flow dynamics reach their maximum values are noted. The heat flow to the array reaches its maximum significantly faster than to the air. Представлены результаты исследования методом численного моделирования теплового режима подземного объекта ... |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Amosov, P. V. |
author_facet |
Amosov, P. V. |
author_sort |
Amosov, P. V. |
title |
Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) |
title_short |
Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) |
title_full |
Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) |
title_fullStr |
Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) |
title_full_unstemmed |
Numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) |
title_sort |
numerical simulation of the thermal regime of an underground spent fuel storage facility (built-in structure variant) |
publishDate |
2021 |
url |
http://hdl.handle.net/1834/41700 |
op_coverage |
Russia Arctic Россия Арктика |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Арктика |
genre_facet |
Arctic Арктика |
op_relation |
http://vestnik.mstu.edu.ru/show-eng.shtml?art=2103 http://vestnik.mstu.edu.ru/show.shtml?art=2103 http://hdl.handle.net/1834/41700 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
_version_ |
1766336590412513280 |