High temperature stratified flow sometimes caused thermal fatigue cracking in power plants. To prevent fatigue damage by stratified flow, it is important to know temperature distribution history in a pipe. In this study, inverse heat conduction analysis method for an elbow model was developed to estimate the inner surface temperature from the measured outer surface temperature. In the method, the transfer function database inter-relating the inner surface temperature with the outer one was used. For several patterns of the temperature history, the inverse analysis simulations were performed and the accuracy of the estimated inner surface temperature was shown.
Development of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow (Part I)
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received March 25, 2015; final manuscript received February 14, 2016; published online April 29, 2016. Assoc. Editor: Albert E. Segall.
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Ioka, S., Kubo, S., Ochi, M., and Hojo, K. (April 29, 2016). "Development of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow (Part I)." ASME. J. Pressure Vessel Technol. October 2016; 138(5): 051202. https://doi.org/10.1115/1.4032815
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