Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (2): 222-226.DOI: 10.12068/j.issn.1005-3026.2016.02.016

• Mechanical Engineering • Previous Articles     Next Articles

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
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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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