It is well known that accurately modeling the radiative heat transfer process at high temperature of several thousand to tens of thousands of K is a main factor in evaluating the efficiency of rocket propellants, pulverized coal combustion and thermal plasma. In particular, as radiative transfer equation (RTE) mathematically explaining heat radiation in the absorbing, emitting and scattering media has a calculus characteristic, its solution exists only in extremely limited geometries and conditions.
To analyze the radiative heat transfer in high temperature systems such as plasma, it is essential to determine the temperature distribution of the plasma, which requires the distribution of radiant intensity to be determined. Therefore, computational models for analyzing the temperature distribution of system and the radiant intensity distribution are required, and it is important to establish a methodology for combining these two computational models and to apply them to practice to improve accuracy.
Pak In Ae, a researcher at the Faculty of Physical Engineering, has proposed a new Discrete Ordinate-Lattice Boltzmann Method (DO-LBM) by combining DOM and LBM to analyze radiative heat transfer in a two-dimensional irregular enclosure that involves absorbing, emitting and scattering media.
Through the comparison with other methods, she has confirmed that the DO-LBM is more simple and accurate and can reduce computational cost of simulating radiative heat transfer in a complex boundary structure.
For more information, please refer to her paper “Discrete-Ordinate-Lattice-Boltzmann Method for analyzing radiative heat transfer: Application to two-dimensional irregular enclosure” in “Mathematics and Computers in Simulation” (SCI).
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