A data reconstruction method for multi-scale coupled thermo-hydraulic calculation of reactor core

A thermal hydraulic and data reconstruction technology, applied in the field of nuclear reactors, can solve problems such as grid form, layout size, quantity difference, grid size gap, etc., to reduce data transfer time, reduce transfer amount, and improve accuracy. Effect

Active Publication Date: 2019-02-01
HARBIN ENG UNIV
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Problems solved by technology

However, there is a significant gap between the grid scale of the core subchannel program and the core CFD program, and there

Method used

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  • A data reconstruction method for multi-scale coupled thermo-hydraulic calculation of reactor core
  • A data reconstruction method for multi-scale coupled thermo-hydraulic calculation of reactor core

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Embodiment 1

[0025] The present invention provides a data reconstruction method on the coupling interface in core thermal-hydraulic multi-scale coupling calculation, which is beneficial to comprehensively ensure the prediction accuracy and efficiency of core thermal-hydraulic state, and supports core thermal-hydraulic multi-scale program coupling Data transfer between grids with different shapes, layouts, sizes, and quantities on the coupling interface during calculation.

[0026] The invention establishes grid mapping among thermal-hydraulic programs of different scales on the thermal-hydraulic multi-scale program coupling interface; completes interface integral reconstruction and transfer of small-scale thermal-hydraulic program data on the thermal-hydraulic multi-scale program coupling interface ; Complete the interface distribution reconstruction and transfer of large-scale thermal-hydraulic program data on the thermal-hydraulic multi-scale program coupling interface.

[0027] A data r...

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Abstract

The invention belongs to the field of nuclear reactors, in particular to a data reconstruction method for multi-scale coupled thermo-hydraulic calculation of reactor core. The invention establishes mesh mapping between thermohydraulic programs with different scales on the thermohydraulic multi-scale program coupling interface. Interface integral reconstruction and transfer of small-scale thermo-hydraulic program data on the coupled interface of thermo-hydraulic multi-scale program. Reconstruction and transfer of interface distribution of large-scale thermohydraulic program data are completed on the coupled interface of thermohydraulic multi-scale program. The invention supports the data transmission between grids of different shapes, arrangement modes, sizes and numbers on the coupling interface in the core thermohydraulic multi-scale code coupling calculation.

Description

technical field [0001] The invention belongs to the field of nuclear reactors, and in particular relates to a data reconstruction method for thermal-hydraulic multi-scale coupling calculation of reactor cores. Background technique [0002] The safety and economy of nuclear power plants are affected by the technical level of nuclear reactor core thermal hydraulic state prediction. The refined thermal-hydraulic computational fluid dynamics (CFD) program of the reactor core can simulate the heat transfer and flow of the reactor core on a detailed spatial scale. This kind of simulation is conducive to reducing the safety margin, supporting the power increase of the power station and the extension of the fuel cycle, ensuring the safety of the power station, and improving the economy of the power station. [0003] However, the internal structure and flow process of the reactor are complex, and the number of grids for thermal-hydraulic CFD analysis of the core is huge, which requi...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F2119/08G06F30/20G06F2119/06
Inventor 陈广亮田兆斐张志俭李磊
Owner HARBIN ENG UNIV
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