open access

https://hdl.handle.net/2115/87111

Application of Heat Transfer Coefficient Estimation Using Data Assimilation and a 1-D Solidification Model to 3-D Solidification Simulation

英語

simulation

2022-08-15

The Iron and Steel Institute of Japan

ISIJ international

62(8)

1666-1673

Solidification simulations are effective in designing a casting process to improve the quality of steel slabs and ingots. In this study, a new method was developed to efficiently estimate multiple heat transfer coefficients to improve the accuracy of three-dimensional (3-D) solidification simulation for a casting process. The heat transfer coefficients for the two heat transfer directions-side and bottom-of a prismatic mold were independently estimated by data assimilation using one-dimensional solidification simulations near the boundaries. The optimum values of the heat transfer coefficients at the side and bottom boundaries were elucidated by comparing the 3-D solidification simulation and experimental cooling curves. The maximum and average errors between the cooling curves of the 3-D solidification simulation with the optimum values and those of the experiment were less than 1.8% and 0.2%, respectively.

学術雑誌論文

Version of Record

0915-1559