Computational radiative transport in complex geometries using orthogonal coordinates

Md Ershadul Haque, Saad Bin Mansoor*, Bekir Sami Yilbas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Radiative heat transport involving complex geometries is an important area of investigation. The formulation of the transport phenomenon is more involved and consideration of the proper treatment of the irregular geometry becomes necessary for accurate estimation of heat transfer rates. Therefore, the present study focuses on the modeling and the solution of the radiative transfer equation (RTE) in an absorbing, emitting, and isotropically scattering, participating media for complex geometries using the body-fitted coordinates. The RTE in an orthogonal coordinate system is formulated and is then numerically solved in conjunction with a numerically generated, body-fitted, curvilinear coordinate system. The geometries are considered to be opaque and, in the analysis, both the radiative as well as the non-radiative equilibrium cases are considered. The formulation is validated through the previously published results. Notable agreement is observed between the results and those reported earlier for different complex geometries and various properties of the participating media.

Original languageEnglish
JournalJournal of Non-Equilibrium Thermodynamics
StateAccepted/In press - 2023

Bibliographical note

Funding Information:
The authors would like to acknowledge the support of King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia. Acknowledgement is also extended to King Abdullah City for Atomic and Renewable Energy (K.A.CARE) and the Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS).

Publisher Copyright:
© 2023 Walter de Gruyter GmbH, Berlin/Boston 2023.


  • body-fitted coordinate
  • complex geometries
  • discrete ordinate method
  • finite difference method
  • radiative transfer equation

ASJC Scopus subject areas

  • General Chemistry
  • General Physics and Astronomy


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