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A cross-dimensional coupling method for a pressurized water reactor passive containment vessel waste heat removal system

A passive containment and waste heat removal system technology, applied in the field of nuclear reactor safety analysis, can solve problems such as three-dimensional mixing, achieve the effects of less computing resource consumption, avoiding three-dimensional modeling, and high accuracy of calculation results

Active Publication Date: 2019-06-18
XI AN JIAOTONG UNIV
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Problems solved by technology

Through subsequent development and improvement, the coupling program can be used for problems with significant three-dimensional mixing phenomena in reactor safety analysis

Method used

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  • A cross-dimensional coupling method for a pressurized water reactor passive containment vessel waste heat removal system
  • A cross-dimensional coupling method for a pressurized water reactor passive containment vessel waste heat removal system
  • A cross-dimensional coupling method for a pressurized water reactor passive containment vessel waste heat removal system

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0028] The present invention provides a cross-dimensional coupling method for passive containment waste heat removal system of PWR, the specific method is as follows:

[0029] Step 1: According to figure 1 Schematic diagram of PWR passive containment waste heat removal system Use any known one-dimensional thermal-hydraulic calculation and analysis program of nuclear power system, such as RELAP5 program, TRAC program, RETRAN program, to establish passive containment waste heat removal system model. The passive containment waste heat removal system model includes the heat exchanger calculation model, the ascending pipe model, the descending pipe model, the heat exchange tank model and the water exchange tank water supply model, so as to simulate and calculate the passive containment waste heat removal system after it is put into operation. The ke...

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Abstract

The invention discloses a cross-dimensional coupling method for a pressurized water reactor passive containment waste heat removal system. The method comprises the following steps: 1, establishing a passive containment waste heat removal system model by utilizing a one-dimensional thermotechnical hydraulic calculation analysis program; 2, establishing a containment three-dimensional computationalfluid mechanics analysis model, and calculating by utilizing computational fluid mechanics software CFX; 3, completing exchange between the one-dimensional thermotechnical hydraulic calculation analysis program and computational fluid mechanics software CFX data; And 4, repeating the step 3 until the requirement of calculating time is met. The method can accurately calculate the values of the temperature, the pressure and the steam portion in the containment under the action of the passive containment waste heat removal system, and is of great significance to safety analysis after an accident.

Description

technical field [0001] The invention belongs to the technical field of safety analysis of nuclear reactors, and specifically relates to a cross-dimensional coupling analysis method for the influence of a passive containment waste heat removal system on the flow field distribution in the containment after an accident. Background technique [0002] The containment is the last barrier to prevent the leakage of radioactive materials in the reactor under accident conditions, so the integrity of the containment is very important to the safety of nuclear reactors. Traditional pressurized water reactor nuclear power plants usually use the containment spray system to dissipate the heat inside the containment after a breach accident, so as to prevent the containment from losing its integrity due to overtemperature and overpressure. However, in the event of a beyond-design basis accident in which the external power source is lost, such as a total power outage, the containment sprinkler...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王明军杨熠晨余浩苏光辉张大林田文喜秋穗正
Owner XI AN JIAOTONG UNIV
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