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Discrete-Ordinate-Lattice-Boltzmann Method for analyzing radiative heat transfer: Application to two-dimensional irregular enclosure

Author

Listed:
  • Kim, In Ae
  • Kim, Yong Jun
  • Choe, Yong Son
  • Han, Chol Su

Abstract

A new Discrete Ordinate-Lattice Boltzmann Method (DO-LBM) is developed by combining DOM and LBM to analyze radiative heat transfer in a two-dimensional irregular enclosure including absorbing, emitting, and scattering media. The accuracy of the proposed method was verified through Chapman-Enskog multi-scale expansion, and non-negativity analysis of the equilibrium distribution function was performed by introducing similarity numbers. Two-dimensional irregular enclosure including curved boundaries and obstacles were considered, and thn numerical results were compared with those obtained by other methods on standard problems. As a result, it was confirmed that the DO-LBM provides a valuable results in simulating radiative heat transfer in a complex boundary structure, which is simple, accurate and can reduce the computational cost compared to other methods.

Suggested Citation

  • Kim, In Ae & Kim, Yong Jun & Choe, Yong Son & Han, Chol Su, 2024. "Discrete-Ordinate-Lattice-Boltzmann Method for analyzing radiative heat transfer: Application to two-dimensional irregular enclosure," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 226(C), pages 452-463.
    • Handle: RePEc:eee:matcom:v:226:y:2024:i:c:p:452-463
    DOI: 10.1016/j.matcom.2024.06.021
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