金属热处理 ›› 2023, Vol. 48 ›› Issue (10): 279-284.DOI: 10.13251/j.issn.0254-6051.2023.10.043

• 数值模拟 • 上一篇    下一篇

筒节淬火界面换热系数求解方法对比

蒋竹凌1,2, 张万良1,2, 夏彬1,2   

  1. 1.中国船舶科学研究中心, 江苏 无锡 214082;
    2.深海技术科学太湖实验室, 江苏 无锡 214123
  • 收稿日期:2023-04-25 修回日期:2023-08-03 出版日期:2023-10-25 发布日期:2023-12-07
  • 作者简介:蒋竹凌(1993—),女,工程师,硕士,主要研究方向为热处理数值模拟, E-mail:jzhuling@126.com

Comparison of solving methods of interfacial heat transfer coefficient for shell ring quenching

Jiang Zhuling1,2, Zhang Wanliang1,2, Xia Bin1,2   

  1. 1. China Ship Science Research Center, Wuxi Jiangsu 214082, China;
    2. Taihu Lake Laboratory of Deep Sea Technology and Science, Wuxi Jiangsu 214123, China
  • Received:2023-04-25 Revised:2023-08-03 Online:2023-10-25 Published:2023-12-07

摘要: 以压力容器筒节为研究对象,基于中空圆柱热传导差分方程,采用温差直接法和温度迭代法,建立换热系数求解的数学模型。根据筒节的实测冷却曲线,通过非线性温度迭代法和温差直接法求解界面换热系数随淬火时间变化曲线,模拟筒节试件淬火过程温度场,对比试验值与两种方法模拟值的误差,验证温差直接法的可靠性,并比较温度迭代法与温差直接法的差异。结果表明,两种方法的温度模拟结果误差都在18%以内且差距不大,但温差直接法的准确性优于温度迭代法。

关键词: 换热系数, 筒节, 淬火, 温差直接法, 温度迭代法, 反传热问题

Abstract: Shell ring of pressure vessel was taken as a research subject. Based on the heat conduction equation for a hollow cylinder, direct method of temperature difference and temperature iteration method were proposed and a mathematical model for heat transfer coefficient was established. Through the tested temperature cooling curves, change curves of interfacial hear transfer coefficient with quenching time were calculated by using temperature iteration method and direct method of temperature difference. By simulating the temperature field and comparing the tested and simulated results, the reliability of direct method of temperature difference was verified, and the difference of accuracy between two methods was analyzed. The results show that the error percentage of two methods between the tested and simulated values are within 18%, and the direct method of temperature difference is more accurate than the temperature iteration method.

Key words: heat transfer coefficient, shell ring, quenching, direct method of temperature difference, temperature iteration method, inverse heat transfer problem

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