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Development of Heat Input Estimation Technique for Simulation of Shell Forming by Line-Heating

N. Osawa1, K. Hashimoto1, J. Sawamura1, J. Kikuchi2, Y. Deguchi2, T. Yamaura2

Dept.of Naval Architecture and Ocean Engineering, Graduate School of Engineering, Osaka University, Osaka, Japan.
Mitsubishi Heavy Industries Co. Ltd., Nagasaki, Japan.

Computer Modeling in Engineering & Sciences 2007, 20(1), 43-54.


A new hypothesis regarding heat transmission during line heating is proposed. It states that the distribution of the temperature of the gas adjacent to the plate, TG, and the overall local heat transfer coefficient, α, depend only on the distance from the torch. An identification technique for TG and α is developed. The validity of the employed hypothesis and the proposed technique is demonstrated by comparing the measured and identified TG during a spot heating test. The plate temperature calculated by direct heat conduction analysis closely approximates the one measured for the spot and line heating tests, when TG and α identified from the spot heating test are used as the thermal boundary conditions. This indicates that heat transmission can be estimated for any desired plate shape, dimension and torch movement history, based solely on the spot heating test results.


Cite This Article

Osawa, N., Hashimoto, K., Sawamura, J., Kikuchi, J., Deguchi, Y. et al. (2007). Development of Heat Input Estimation Technique for Simulation of Shell Forming by Line-Heating. CMES-Computer Modeling in Engineering & Sciences, 20(1), 43–54.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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