S0802-3-5 ナトリウム冷却高速炉における液中渦発生条件に関する研究 : 液中渦発生条件の粘性係数依存性(原子力システムおよび要素技術(3))

概要

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Cavitation due to Sub-surface vortex is one of the significant issues for the design of Japan Sodium Cooled Fast Reactor. This phenomenon has been well-researched for the pump sumps in the turbo machinery field. However, in those researches for the pump sumps, the working fluid is mainly water as well as in the real plant Thus, there are few works concerning the influences of physical properties of working fluid. In the present study, a fundamental experiment was performed for the influences of fluid viscosity on the sub-surface vortex. The experiment was carried out in a simple cylindrical water tank geometry. The fluid temperature was varied from 10 to 80 ℃. The experimental results showed that the onset condition of cavitation due to the sub-surface vortex depended on not only catvitation factor but nondimensional circulation.
一般社団法人日本機械学会の論文
2010-09-04