两相横向流诱发管束弹性不稳定性的试验研究进展

Experimental Research on Fluid-Elastic Instability of Tube Bundles Subjected to Two-Phase Cross Flow

弹性不稳定性是流体诱发管束振动失效的最主要原因,文章针对两相横向流诱发管束弹性不稳定性的试验研究进展进行了综述。介绍了两相横向流诱发管束振动的试验介质和试验装置,概括了含气率、振幅、阻尼以及流体动力质量的测量和计算方法,探讨了试验介质、管束的排列方式、节径比以及含气率等对流体弹性不稳定性的影响,同时总结了两相横向流诱发管束弹性不稳定性的设计准则。最后提出了两相流诱发管束弹性不稳定性的模拟研究将成为研究热点。

Fluid-elastic instability is the major factor to cause the vibration of tube bundles subjected to two-phase cross flow. The experimental research on fluid-elastic instability of tube bundles subjected to two-phase cross flow was reviewed. The test medium and experimental apparatus for the vibrations of tube bundles subjected to two-phase cross flow were introduced. The measurement and calculation methods of void fraction, amplitude, damping and hydrodynamic mass were generalized. The influence factors of two-phase fluids, tube bundle configurations, pitch-to-diameter ratio and void fraction on fluid-elastic instability were discussed, and the design guidelines of fluid-elastic instability in tube arrays subjected to two-phase cross flow were summarized. At last, itis proposed that the simulation study of the fluid-elastic instability of the two-phase flow will become a rearch hotspot.