铸造数值建模过程界面换热系数反算技术研究进展-中国材料进展

文章信息/Info

Title:: Research Progress on Inverse Calculation Technique of Interfacial Heat Transfer Coefficient in Numerical Modeling of Casting Process

作者:: 张正烨; 董安平; 隋大山; 陈忠奉; 桂大兴; 孙宝德; 1 上海交通大学材料科学与工程学院上海市先进高温材料及其精密成形重点实验室上海 200240 2 上海鑫凝控材科科技有限公司上海 200240 3上海交通大学材料科学与工程学院金属基复合材料国家重点实验室上海 200240

Author(s):: ZHANG Zhengye; DONG Anping; SUI Dashan; CHEN Zhongfeng; GUI Daxing ; SUN Baode; 1.Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China 2.Shanghai Xinning Control Material Technology Co., Ltd. , Shanghai 200240, China et al.

Keywords:: casting; numerical modeling; boundary condition; interfacial heat transfer coefficient; inverse calculation technique

摘要:: 铸造过程数值建模已经成为预测铸造缺陷、优化铸造工艺的一种关键有效工具。界面换热系数是铸造数值建模的重要边界条件之一，难以通过直接测量获取，常通过反算技术确定。反算技术具有非线性、计算量大和解不适定等特性，增加了反算求解的难度。综述了铸造数值建模过程中界面换热系数反算技术的研究现状和最新进展，归纳了界面换热系数的主要反算求解方法，并详细论述了基于反算法的界面换热系数对于铸造过程数值建模精度的影响。探讨了现有反算技术的不足和局限性，并提出了界面换热系数反算技术的未来研究方向和发展趋势。

Abstract:: Numerical modeling in the casting process has become a key tool for predicting defects and optimizing processes. The interfacial heat transfer coefficient is one of the important boundary conditions in casting numerical modeling, which is difficult to be obtained by direct measurement and is often determined through inverse calulation technique. The inverse calulation technique have characteristics such as nonlinearity, large computational requirements and non-unique solutions, which increase the difficulty of inverse solution. This work reviews the current research status and latest developments of the interfacial heat transfer coefficient inverse calulation technique in casting numerical modeling, summarizes the main inverse solution methods of the interfacial heat transfer coefficient, and elaborates on the impact of the inverse algorithm-based interfacial heat transfer coefficient in numerical modeling of the casting process. The limitations and shortcomings of the existing inverse calulation technique are discussed, and future research directions and technological development trends are proposed.