超音波流速分布計測法による液体金属流動計測 : 第1報,LBEターゲットの流動計測(流体工学,流体機械)

概要

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Ultrasonic Velocity profiler (UVP) is a powerful tool to measure an instantaneous velocity profile especially on a velocity measurement of an opaque liquid flow, such as liquid metal. In this study, UVP is applied to a velocity field measurement of a fluid flow of Lead Bismuth Eutectic (LBE) in the Accelerator Drive System (ADS). At a lower temperature, wetting of LBE to stainless steel that is a material of target loop is too poor. We solved this problem by solder coating of the measurement window of the target loop. We performed velocity measurement on the centerline of the loop and confirmed basic performance of the loop. It was found that there was intermittent release of eddy from the re-circulation region formed on a wall surface of an inner cylinder and behind the edge. We made then a measurement for an angluar direction of circumference around the central axis and obserbed 3-dimensional structure of LBE flow of the loop. From these results, we made clear that UVP is highly effective in a measurement of the flow field of liquid metal.
一般社団法人日本機械学会の論文
2006-03-25