高サイクル熱疲労評価のための構造表面温度ゆらぎ時系列の推定法(熱工学,内燃機関,動力など)

概要

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This paper describes the strict derivation of the power spectrum method to evaluate effective heat transfer coefficients required to predict the surface temperature fluctuation from the measured fluid temperature. Two prediction methods of metal surface temperature fluctuation: "Improved Time Range Method" and "Frequency Range Method" were proposed using the effective heat transfer coefficient predicted by the power spectrum method and fluid temperature fluctuation data. The prediction errors of these methods were investigated using parallel impinging jet test data. It was found that the metal temperature fluctuations predicted by the two methods agreeded with the corresponding experimental data and the validity of the methods were demonstrated. Metal surface temperature fluctuation was predicted by the two methods. The predicted results appeared to be in good agreement each other and no marked difference in prediction accuracy were found between the Time Range Method and the Frequency Range Method.
一般社団法人日本機械学会の論文
2004-06-25