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首页> 外文期刊>SAE International Journal of Passenger Cars - Mechanical Systems >Enhanced Heat Transfer Coefficient (HTC) Method to Model Air Quench Process: HTC Patching for More Accurate FEA Temperature Calculation
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Enhanced Heat Transfer Coefficient (HTC) Method to Model Air Quench Process: HTC Patching for More Accurate FEA Temperature Calculation

机译：用于模拟空气淬火过程的增强型热传递系数（HTC）方法：HTC修补可实现更精确的FEA温度计算

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摘要

Air quenching is a common manufacturing process in automotive industry to produce high strength metal component by cooling heated parts rapidly in a short period of time. With the advancement of finite element analysis (FEA) methods, it has been possible to predict thermal residual stress by computer simulation. Previous research has shown that heat transfer coefficient (HTC) for steady air quenching process is time and temperature independent but strongly flow and geometry dependent. These findings lead to the development of enhanced HTC method by performing CFD simulation and extracting HTC information from flow field. The HTC obtained in this fashion is a continuous function over the entire surface. In current part of the research, two patching algorithms are developed to divide entire surface into patches according to HTC profile and each patch is assigned a discrete HTC value. Also included in this research is the performance comparison of the two patching algorithms by analyzing the errors.
机译：空气淬火是汽车工业中常见的制造过程，其通过在短时间内快速冷却加热的零件来生产高强度金属部件。随着有限元分析（FEA）方法的发展，已经可以通过计算机模拟来预测热残余应力。先前的研究表明，稳定空气淬火过程的传热系数（HTC）与时间和温度无关，但与流量和几何形状密切相关。这些发现导致通过执行CFD模拟并从流场提取HTC信息来开发增强型HTC方法。以这种方式获得的HTC在整个表面上是连续功能。在当前的研究部分中，开发了两种修补算法，可根据HTC轮廓将整个表面划分为小块，每个小块被分配一个离散的HTC值。这项研究还包括通过分析错误来比较两种修补算法的性能。

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