Cross-dimension coupling analysis method for containment and passive containment air cooling system
An air cooling system, passive containment technology, applied in design optimization/simulation, calculation, computer-aided design, etc., can solve the problem of inability to calculate stainless steel containment passive containment air cooling system, passive containment air cooling system The geometric structure is complex and cannot be simulated, so as to achieve the effect of easy further development, less computing resource requirements, and high precision
Active Publication Date: 2021-08-20
XI AN JIAOTONG UNIV
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Problems solved by technology
[0003] The multi-node containment program has been widely used in thermal-hydraulic calculations of containment compartments in accidents, but it cannot calculate the passive containment air cooling system outside the stainless steel containment
At the same time, the geometric structure of the passive containment air cooling system is complex, and the radiation heat transfer on the metal wall needs to be considered, which cannot be well simulated by the multi-node containment program
Therefore, there is currently no good method to comprehensively calculate the thermal-hydraulic behavior of the passive containment air cooling system and the thermal-hydraulic behavior of the containment under the passive containment air cooling system
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[0092] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0093] figure 1 Schematic diagram of modeling the containment and passive containment air cooling system, using the computational fluid dynamics software CFX to simulate the passive containment air cooling system, using the multi-node containment program to simulate the thermal and hydraulic behavior in the containment, and the passive containment The temperature of the containment wall connected to the air cooling system is calculated by the interface module and transmitted to the computational fluid dynamics software CFX and the multi-node containment program.
[0094] Such as figure 2 As shown, the cross-dimensional coupling analysis method of containment and passive containment air cooling system of the present invention includes the following steps:
[0095] Step 1: Set the calculation time step as Δτ, and set initial values for the...
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The invention discloses a cross-dimension coupling analysis method for a containment and a passive containment air cooling system. The method comprises the following steps: 1, initializing the containment and the passive containment air cooling system; 2, utilizing a multi-node containment program to calculate the heat exchange between the compartment and the wall surface of the adjacent containment and the thermal hydraulic state in the compartment in the accident process; 3, judging whether the last compartment is calculated or not, if so, going to the step 5, and otherwise, going to the step 4; 4, calculating the condensate water transfer process of the wall surface of the containment, and performing calculation in the step 2 on the next compartment; 5, calculating flow heat exchange of the passive containment air cooling system by utilizing three-dimensional computational fluid mechanics software; 6, calculating the temperature of the wall surface of the containment; and 7, repeating the steps 1-6 until the appointed calculation time is reached. The flow heat exchange of the passive containment air cooling system and the influence of the flow heat exchange on the thermal hydraulic state of the containment can be quickly and accurately calculated, and the method is of great significance to the integrity analysis of the pressurized water reactor containment.
Description
technical field [0001] The invention belongs to the field of nuclear reactor containment accident phenomenon calculation, and in particular relates to a cross-dimensional coupling analysis method for a containment and passive containment air cooling system. Background technique [0002] The internal containment of third-generation nuclear power plants such as AP1000 is made of stainless steel. Some scholars have proposed to install a passive containment air cooling system outside the stainless steel containment to cool the stainless steel containment in an accident and maintain the integrity of the containment. [0003] The multi-node containment program has been widely used in the thermal-hydraulic calculation of the compartment inside the containment in accidents, but it cannot calculate the passive containment air cooling system outside the stainless steel containment. At the same time, the geometric structure of the passive containment air cooling system is complex, and ...
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Login to view more IPC IPC(8): G06F30/28G06F119/08
CPCG06F30/28G06F2119/08
Inventor 张亚培葛魁张慧芳巫英伟田文喜苏光辉秋穗正
Owner XI AN JIAOTONG UNIV
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