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A coupling numerical methodology for weakly transient conjugate heat transfer problems

机译：弱瞬态共轭传热问题的耦合数值方法

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摘要

This study deals with the development of a partitioned coupling strategy at the fluid-solid interface for weakly transient heat transfer problems. The thermal coupling is carried out by an iterative procedure (strong coupling) between a transient solid and a sequence of steady states in the fluid. Continuity of temperature and heat flux is ensured at each coupling time step. Emphasis is put on the choice of interface conditions at the fluid-solid interface. Two fluid-solid transmission procedures are considered in this paper: Dirichlet-Robin and Neumann-Robin conditions. These conditions are theoretically examined and it is shown that the Biot number is a key parameter for determining relevant interface conditions. Stability diagrams are provided in each case and the most effective coupling coefficients are highlighted and expressed. Numerical thermal computations are then performed for two different Biot numbers. They confirm the efficiency of the interface conditions in terms of accuracy, stability and convergence. At the end of this paper a comparison between a partitioned and a monolithic approach is presented.
机译：这项研究涉及在液-固界面处针对弱瞬态传热问题的分区耦合策略的发展。热耦合通过瞬态固体和流体中一系列稳态之间的迭代过程（强耦合）进行。在每个耦合时间步长处确保温度和热通量的连续性。重点放在流固界面的界面条件选择上。本文考虑了两种流固传输程序：Dirichlet-Robin和Neumann-Robin条件。从理论上对这些条件进行了检查，结果表明，比奥数是确定相关界面条件的关键参数。分别提供了稳定性图，并突出显示了最有效的耦合系数。然后对两个不同的毕奥特数进行数值热计算。他们在准确性，稳定性和收敛性方面确定了界面条件的效率。在本文的最后，对分区方法和整体方法进行了比较。

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    G. Gimenez; M. Errera; D. Baillis; Y. Smith; F. Pardo;

  • 作者单位

    Universite de Lyon, CNRS, LaMCoS, INSA Lyon, UMR 5259, F-69621 Villeurbanne Cedex, France,Turbomeca (Safran Group), BP17, 64 511 Bordes Cedex, France;

    ONERA, The French Aerospace Lab, DMFN, 29 Avenue de to Division Leclerc, 92 322 Chatillon Cedex, France;

    Universite de Lyon, CNRS, LaMCoS, INSA Lyon, UMR 5259, F-69621 Villeurbanne Cedex, France;

    Turbomeca (Safran Group), BP17, 64 511 Bordes Cedex, France;

    Turbomeca (Safran Group), BP17, 64 511 Bordes Cedex, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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