NUMERICAL SIMULATION OF HEAT FLOW WITH PARTICIPATING MEDIA RADIATION USING TOTAL ENERGY BASED ENTROPIC LATTICE BOLTZMANN METHOD

Date

2023-8-25

Author

Gümüşsu, Emre

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Operating temperatures of industrial systems are increasing due to requirements for higher efficiency and superior performance. Participating media radiation becomes essential for accurate thermal modeling of these systems. Problems with participating media radiation require solution of all modes of heat transfer. Lattice Boltzmann method emerges as a powerful technique for solution of multi-mode heat transfer problems. The thesis proposes a specific method to implement total energy based formulation of double population entropic lattice Boltzmann method in multi-mode heat transfer problems with participating media. All parameters in the problem are calculated through an integrated lattice Boltzmann solver. Total energy based formulation is modifed to be implemented in these kinds of problems. Chapman Enskog formulation is used for verification of the modification. Reference cases are selected from literature and adopted for validation. Then, duct flow in a participating media is analyzed in a detailed manner. Thereby, a clear explanation is provided for the interaction of flow field with respect to different values of Reynolds number, single scattering albedo and extinction coefficient.

Subject Keywords

Participating media, double population LBM, duct flow, total energy

URI

https://hdl.handle.net/11511/105366

Collections

Graduate School of Natural and Applied Sciences, Thesis