东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (2): 222-226.DOI: 10.12068/j.issn.1005-3026.2016.02.016

• 机械工程 • 上一篇    下一篇

移动交界面流固耦合传热的数值稳定性分析

赵千里, 孙志礼, 佟操, 柴小冬   

  1. (东北大学 机械工程与自动化学院, 辽宁 沈阳110819)
  • 收稿日期:2014-12-14 修回日期:2014-12-14 出版日期:2016-02-15 发布日期:2016-02-18
  • 通讯作者: 赵千里
  • 作者简介:赵千里(1989-),男,江苏常州人,东北大学博士研究生; 孙志礼(1957-),男,山东巨野人,东北大学教授,博士生导师.
  • 基金资助:
    国家科技重大专项(2013ZX04011-011).

Numerical Stability Analysis for Fluid Structure Conjugate Heat Transfer on Moving Interface

ZHAO Qian-li, SUN Zhi-li, TONG Cao, CHAI Xiao-dong   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2014-12-14 Revised:2014-12-14 Online:2016-02-15 Published:2016-02-18
  • Contact: ZHAO Qian-li
  • About author:-
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摘要: 研究了交界面移动情况下流固耦合稳态传热的数值稳定性问题.考虑Dirichlet-Robin组合边界条件,用速度表征交界面的移动情况,流体域和固体域分别采用有限体积法和有限单元法进行离散及数值求解,利用Goudonov-Ryabenkii理论正则模态分析方法重点研究了交界面移动时数值方法的稳定性,最终获得了一条由耦合系数和移动速度组成的最优曲线,并且证明了当耦合系数和移动速度在这条曲线上取值时,离散的求解域能够达到最快的收敛速度及绝对的稳定性特征.为设计人员进行数值仿真时选取合理的参数提供了参考.

关键词: 移动交界面, 耦合传热, 组合边界条件, 稳定性分析, 正则模态

Abstract: The numerical stability of stable heat transfer along moving fluid-structure interface was investigated. Taking the Dirichlet-Robin conditions into account, the interface movement was designated by velocity. The most common configurations (finite volume method for fluid domain and finite element method for solid domain) were used to discretize the fluid-structure system and perform numerical computation, respectively. Great emphasis was put on stability of numerical treatments when the interface moving with the adoption of the Goudonov-Ryabenkii theory normal mode analysis method. An optimal curve composed of coupling coefficient and velocity was finally obtained, which verified that the discrete system would reach fastest convergence rate and definite stability if the values of coupling coefficient and velocity come from this curve. These conclusions will provide a reference for designers to select reasonable parameters during numerical simulation.

Key words: moving interface, conjugate heat transfer, combined boundary condition, stability analysis, normal mode

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