• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International conference on nuclear engineering >NUMERICAL SIMULATION ANALYSIS ON THE FLOW MECHANISM OF PASSIVE CONTAINMENT COOLING SYSTEM
【24h】

NUMERICAL SIMULATION ANALYSIS ON THE FLOW MECHANISM OF PASSIVE CONTAINMENT COOLING SYSTEM

机译：无源容器冷却系统流动机理的数值模拟分析。

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the third generation PWR, passive containment cooling system was one of the key security parts. If accident happened, the blasting valves in the containment would automatically open and the steam would be injected into the containment. When the pressure reached a certain value, the tank on the top of containment would automatically spray. Driven by gravity, the cooling water would flow along outer surface of containment. Steam inside the containment would condense on inner wall and the pressure in the containment would decrease. A numerical simulation of steam jet in the passive containment cooling system was carried out using computational fluid dynamics methods. Flow mechanism in the process was studied. A simplified three-dimensional model of the passive containment cooling system was built. The hexahedral structured mesh was made. The RNG k-epsilon turbulence model was used in solving the transient Reynolds Navier-Stokes equations by the Fluent. The distributions of velocity in containment at different time were acquired. Reference would be provided for understanding of flow mechanism of gas jet-flow in containment during the early stage of accident.
机译：在第三代压水堆中，被动安全壳冷却系统是关键的安全部件之一。如果发生事故，安全壳中的喷砂阀将自动打开，蒸汽将注入安全壳中。当压力达到一定值时，安全壳顶部的储罐将自动喷射。在重力的驱动下，冷却水将沿着安全壳的外表面流动。安全壳内的蒸汽将凝结在内壁上，安全壳内的压力将降低。使用计算流体动力学方法对被动安全壳冷却系统中的蒸汽射流进行了数值模拟。研究了该过程中的流动机理。建立了被动安全壳冷却系统的简化三维模型。制成六面体结构的网格。 RNGk-ε湍流模型用于通过Fluent求解瞬态雷诺Navier-Stokes方程。获取了不同时间安全壳内的速度分布。为了解事故初期安全壳内气流的流动机理提供参考。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号