抄録
For continuing nuclear energy as one of basic power sources, it is necessary to strengthen the supply stability, moreover, build nuclear fuel cycle which reprocesses spent fuel produced from nuclear power plant, and reuses uranium and plutonium collected. In the research field of reprocessing process of this cycle, recently, a new type centrifugal extractor using Taylor-Couette vortex flow is studied for improving the extraction efficiency. By the way, since the unstable vortex formation causes fluctuations in extractor's torque and chemical reaction time, the understanding and control of this kind of vortex flow are necessary. Especially, for the practical usage, it is important to investigate the characteristics of Taylor-Couette vortex flow with a through-flow. In this study, we investigated the effects of through-flow on Taylor-Couette vortex flow with use of an Ultrasonic Velocity Profiler (UVP), which is capable of visualizing the flow dynamic characteristics. Under through-flow condition, we found that vortices are drifting in the direction of through-flow and their motions depend on Reynolds number of through-flow.
