A distance-function-based Cartesian (DIFCA) grid method for irregular geometries

J. C. Chai, Y. F. Yap

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A distance-function-based Cartesian grid (DIFCA) method is presented for conduction heat transfer in irregular geometries. The irregular geometries are identified by distance functions. The finite-volume method is used to discretize the heat conduction equation. Non-zero departure from regular geometries terms are added to the discretization equations for the control volumes bisected by irregular boundaries. With these additional departure terms, the existing Cartesian finite-volume solver can be modified easily to model heat conduction in irregular geometries. Given boundary temperatures, given boundary fluxes and convective heat transfer at irregular boundaries are considered. Non-zero heat generation is also modeled. The proposed procedure is validated against eight test cases where good agreements are achieved.

Original languageEnglish
Pages (from-to)1691-1706
Number of pages16
JournalInternational Journal of Heat and Mass Transfer
Issue number7-8
Early online date30 Aug 2007
Publication statusPublished - Apr 2008
Externally publishedYes


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