内包流体の温度成層化により円筒容器に生じる熱応力の評価線図

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タイトル別名
  • Evaluation Charts of Thermal Stresses in Cylindrical Vessels Induced by Thermal Stratification of Contained Fluid
  • ナイホウ リュウタイ ノ オンド セイソウカ ニ ヨリ エントウ ヨウキ ニ ショウジル ネツ オウリョク ノ ヒョウカセンズ

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説明

Temperature and thermal stress in cylindrical vessels were analysed for the thermal stratification of contained fluid. Two kinds of temperature analysis results were obtained such as the exact temperature solution of eigen-function series and the simple approximate one by the temperature profile method. Furthermore, shell solutions of thermal stress were obtained for the simple approximate temperatures. Through comparison with FEM analyses, these solutions were proved to be adequate. The simple temperature solution is described by one parameter that is the temperature decay factor. The shell solutions of thermal stress are described by two parameters. One is the ratio between the temperature decay factor and the load decay factor. Another is the non-dimensional width of stratification. These solution are so described by few parameters that those are suitable for the simplified thermal stress evaluation charts. These charts enable quick and accurate thermal stress evaluations of cylindrical vessel of this problem compared with conventional methods.

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