Combined interface boundary condition method for coupled thermal simulations

B. Roe, R. Jaiman, A. Haselbacher, Philippe H Geubelle

Research output: Contribution to journalArticlepeer-review

Abstract

A new procedure for modeling the conjugate heat-transfer process between fluid and structure subdomains is presented. The procedure relies on higher-order combined interface boundary conditions (CIBC) for improved accuracy and stability. Traditionally, continuity of temperature and heat flux along interfaces is satisfied through algebraic jump conditions in a staggered fashion. More specifically, Dirichlet temperature conditions are usually imposed on the fluid side and Neumann heat-flux conditions are imposed on the solid side for the stability of conventional sequential staggered procedure. In this type of treatment, the interface introduces additional stability constraints to the coupled thermal simulations. By utilizing the CIBC technique on the Dirichlet boundary conditions, a staggered procedure can be constructed with the same order of accuracy and stability as those of standalone computations. Using the Godunov-Ryabenkii normal-mode analysis, a range of values of the coupling parameter is found that yields a stable and accurate interface discretization. The effectiveness of the method is investigated by presenting and discussing performance evaluation data using a 1D finite-difference formulation for each subdomain.

Original languageEnglish (US)
Pages (from-to)329-354
Number of pages26
JournalInternational Journal for Numerical Methods in Fluids
Volume57
Issue number3
DOIs
StatePublished - May 30 2008

Keywords

  • Combined interface boundary conditions
  • Conjugate heat transfer
  • Stability
  • Staggered procedure

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

Fingerprint

Dive into the research topics of 'Combined interface boundary condition method for coupled thermal simulations'. Together they form a unique fingerprint.

Cite this