219204 複雑管群流路内における流動構造遷移(OS10 熱流体計測の新展開2,オーガナイズド・セッション)

概要

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In order to achieve increase of power outputs of a BWR, it is extremely important to evaluate coolant flow in a lower plenum. Numerical simulation is helpful to predict the coolant flow. However the simulation results considerably depends on models, thus verification experiment is needed. Hence, the objective of the present study is the construction of the benchmark of CFD code by conducting experiments and to clarify the flow structure of a lower plenum in detail. We constructed a 1/10 model of a lower plenum to measure velocity, differential pressure profiles and to visualize the flow structure. In the experiment, it turned out that flow structure of the lower plenum vary depending on Reynolds number. Therefore, it is necessary to examine the effects of complicated phenomena on such transition of the flow structure.
一般社団法人日本機械学会の論文
2011-03-17