Analysis of Coupling Strategies for Conjugate Heat Transfer Problems

Emad Tandis; Philip Cardiff; Ali Ashrafizadeh

doi:10.51560/ofj.v5.92

Analysis of Coupling Strategies for Conjugate Heat Transfer Problems

Emad Tandis
, Philip Cardiff
, Ali Ashrafizadeh

Research output: Contribution to journal › Article › peer-review

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Abstract

Numerical solutions to conjugate heat transfer (CHT) problems present challenges regarding accuracy, stability, and computational cost. The current study presents a detailed analysis of the existing OpenFOAM® CHT solvers, including commentary on the multiple forms of the available governing equations and coupling methods. Subsequently, two modified CHT approaches are proposed: (i) a new partitioned algorithm with improved efficiency, and (ii) the available monolithic CHT solver in foam-extend-4.0 was modified and extended to multiple regions. The performance of the proposed solvers is assessed on several transient test cases with various degrees of coupling strength. The results reveal the superiority of the proposed monolithic approach over the partitioned ones, particularly for problems for more than two regions. It is also found that the new partitioned approach is computationally more efficient than the available partitioned solvers.

Original language	English
Pages (from-to)	38-58
Number of pages	21
Journal	OpenFOAM® Journal
Volume	5
DOIs	https://doi.org/10.51560/ofj.v5.92
Publication status	Published - 7 Mar 2025

Bibliographical note

Funding

Emad Tandis acknowledges using TAURUS HPC at Aston. Philip Cardiff acknowledges that hiscontribution to this work has emanated from research conducted with the financial support of/supportedin part by a grant from Science Foundation Ireland (SFI) under Grant number RC2302-2. In addition,Philip Cardiff gratefully acknowledges financial support from the Irish Research Council through theLaureate program, grant number IRCLA/2017/45, and the European Research Council (ERC) under theEuropean Union’s Horizon 2020 research and innovation programme (Grant agreement No. 101088740).

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10.51560/ofj.v5.92Licence: CC BY-SA 4.0

Analysis of Coupling Strategies for Conjugate Heat Transfer Problems
Copyright © 2025 The Authors. This work is an open access article under the CC BY-SA 4.0 license.
Final published version, 846 KBLicence: CC BY-SA 4.0

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title = "Analysis of Coupling Strategies for Conjugate Heat Transfer Problems",

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N2 - Numerical solutions to conjugate heat transfer (CHT) problems present challenges regarding accuracy, stability, and computational cost. The current study presents a detailed analysis of the existing OpenFOAM® CHT solvers, including commentary on the multiple forms of the available governing equations and coupling methods. Subsequently, two modified CHT approaches are proposed: (i) a new partitioned algorithm with improved efficiency, and (ii) the available monolithic CHT solver in foam-extend-4.0 was modified and extended to multiple regions. The performance of the proposed solvers is assessed on several transient test cases with various degrees of coupling strength. The results reveal the superiority of the proposed monolithic approach over the partitioned ones, particularly for problems for more than two regions. It is also found that the new partitioned approach is computationally more efficient than the available partitioned solvers.

AB - Numerical solutions to conjugate heat transfer (CHT) problems present challenges regarding accuracy, stability, and computational cost. The current study presents a detailed analysis of the existing OpenFOAM® CHT solvers, including commentary on the multiple forms of the available governing equations and coupling methods. Subsequently, two modified CHT approaches are proposed: (i) a new partitioned algorithm with improved efficiency, and (ii) the available monolithic CHT solver in foam-extend-4.0 was modified and extended to multiple regions. The performance of the proposed solvers is assessed on several transient test cases with various degrees of coupling strength. The results reveal the superiority of the proposed monolithic approach over the partitioned ones, particularly for problems for more than two regions. It is also found that the new partitioned approach is computationally more efficient than the available partitioned solvers.

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Analysis of Coupling Strategies for Conjugate Heat Transfer Problems

Abstract

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