Test Studies of Flow Induced Vibration for Fuel Assembly
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摘要: 采用试验的方法对燃料组件的振动特性和流致振动响应进行研究,获得了燃料组件的固有振动特性;各稳态工况的流致振动响应规律:响应随流量的增加而增加;瞬态工况下振幅、频率与时间(流量)的三维瀑布图以及定位格架的运动轨迹。试验所获得的完整、可靠的数据为燃料组件的设计、安全分析和磨蚀试验提供重要的输入参数,为最终的安全评审提供依据。Abstract: Test method is used to research fuel’s natural characteristics and flow induced vibration responses. It obtained the natural frequencies, and responses rule that is flow induced vibration responses increased with flow increases. Then it achieved waterfall for amplitude, frequency and time(flow) on transient state; and movement trace of grid. The full and reliable test data will be an input for the design, safety analysis and fretting test; and support the safety evaluation.
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Key words:
- Fuel Assembly /
- Dynamic characteristics /
- Flow induced vibration
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