Experimental Study on Wind Load Performance of ACP100 Passive Containment Air Cooling System
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摘要: 环境风场对模块化小型压水堆（ACP100）核电厂的非能动安全壳空气冷却系统（PAS）的运行有着不可忽视的影响。通过在风洞平台内搭建ACP100小比例模型，探究不同环境风向角度和风速条件对PAS运行的影响；同时，采用Ansys Fluent软件对ACP100试验模型（主要由风洞平台模型和ACP100小比例模型2部分组成）和原厂模型进行数值模拟。结果表明：各环境风向角度、风速条件均有利于PAS换热；随着环境风速的增加，PAS进出口压力均与环境风速呈二次函数递减关系，且当环境风速达到12.5 m/s后，PAS进出口压差与环境风速的平方值正比例相关；ACP100原厂模型数值模拟结果显示环境风速越大，PAS换热效果越佳，当环境风速达到20 m/s时，各环境风向角度对应的PAS换热功率相对无风条件下增幅为23.0%~56.5%，平均增幅为35.6%。研究结果为ACP100的设计及优化提供了有力参考。
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关键词:
- 环境风场 /
- 非能动安全壳空气冷却系统（PAS） /
- 小比例模型 /
- 原厂模型
Abstract: Environmental wind field has important influences on the operation of passive containment air cooling system (PAS) of ACP100, a modular pressurized water reactor nuclear power plant. A small-scale model of ACP100 is built in the wind tunnel platform to explore the influence of different environmental wind direction angles and wind speed conditions on the operation of PAS. At the same time, the ACP100 test model (mainly composed of wind tunnel platform model and ACP100 small-scale model) and the original model are numerically simulated by Ansys Fluent. The results show that all environmental wind direction angles and wind speed conditions are conducive to PAS heat transfer; with the increase of the environmental wind speed, the PAS inlet and outlet pressures have a quadratic decreasing relationship with the environmental wind speed. When the environmental wind speed reaches 12.5 m/s, the pressure difference between the inlet and outlet of PAS is positively proportional to the square of the environmental wind speed; The numerical simulation results of ACP100 original model show that the greater the ACP100 wind speed, the better the PAS heat exchange effect. When the ACP100 wind speed reaches 20 m/s, the increase of PAS heat exchange power corresponding to each environmental wind direction angle is 23.0% ~56.5% compared with that under windless conditions, with an average increase of 35.6%. The research results provide a powerful reference for the design and optimization of ACP100.-
Key words:
- Environmental wind field /
- PAS /
- Small-scale model /
- Original model
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图 2 进风口及环境风向角度分布示意图
Figure 2. Schematic Diagram of Angle Distribution of Air Inlet and Environmental Wind Direction
图 3 环境风速15 m/s进出口压力随风向角度变化图
Figure 3. Variation Diagram of Inlet and Outlet Pressure with Wind Direction Angle under Environmental Wind Speed of 15 m/s
图 4 环境风速15 m/s PAS流道内压力随风向角度变化图
Figure 4. Variation Diagram of Pressure in PAS Channel with Wind Direction Angle under Environmental Wind Speed of 15 m/s
图 5 风向角度90°进出口压力随环境风速变化图
Figure 5. Variation Diagram of Inlet and Outlet Pressure with Environmental Wind Speed at Wind Direction Angle of 90°
图 6 压差系数随风速变化示意图
Figure 6. Schematic Diagram of Pressure Difference Coefficient Changing with Wind Speed
图 8 不同风速下ACP100试验模型数值模拟与试验结果
下标e—试验结果；下标c—数值模拟结果
Figure 8. The Numerical Simulation and Test Results of ACP100 Test Model by Different Wind Speeds
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