温度成層界面ゆらぎにより発生する熱応力の 周波数応答に関する研究
英字タイトル:
Study on the frequency response mechanisms of thermal stress induced by thermal stratification oscillation phenomenon
著者:
水谷 崇人 Takato MIZUTANI ダビッド フォウントヴィエス DavidLucien FUNTOWIEZ 笠原 直人 Naoto KASAHARA
発刊日:
公開日:
Finite element simulationFrequency response functionTemperature attenuation TherThermal stratification oscillation
Study on the frequency response mechanisms of thermal stress induced by thermal stratification oscillation phenomenon
著者:
水谷 崇人 Takato MIZUTANI ダビッド フォウントヴィエス DavidLucien FUNTOWIEZ 笠原 直人 Naoto KASAHARA
発刊日:
公開日:
カテゴリ: 第10回
キーワードタグ:Finite element simulationFrequency response functionTemperature attenuation TherThermal stratification oscillation
概要
The temperature oscillation produced by thermal stratification phenomenon induces thermal fatigue damages on structures of nuclear components, which should be prevented. To evaluate thermal fatigue, the frequency response function was developed. However, this theoretical method does not take particular effects of thermal stratification oscillation into account. To clarify these effects, finite element simulations were conducted with two fluid temperature models. Based on mechanisms of the effects, the frequency response function was improved. Agreement with the results of the finite element simulations confirmed the proposed function.
