Development of DEM-CFD Simulation of Combustion Flow in Incinerator with the Representative Particle Model

Kuwagi, Kenya and Takami, Toshihiro and Azri, Alias and Rong, Degang and Takeda, Hiroshi and Yanase, Shinichiro and Kouchi, Toshinori and Hyakutake, Toru and Yokoyama, Kaoru and Ohara, Yoshiyuki and Takahashi, Nobuo and Sugitsue, Noritake (2016) Development of DEM-CFD Simulation of Combustion Flow in Incinerator with the Representative Particle Model. Journal of Chemical Engineering of Japan, 49 (5). pp. 425-434. ISSN 0021-9592. (Published)

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A simulation code based on the discrete element method (DEM) and computational fluid dynamics (CFD) coupling model was developed to simulate the behavior of radioactive cesium in waste incinerators. The waste lump was represented by particles in the simulation. The energy equation for a mixed gas, diffusion equation for each gas component, as well as the energy, drying, pyrolysis, and combustion equations for each particle were solved in the simulation by adding a combustion model to the standard DEM–CFD coupling model. The particle size of the waste changed as drying, pyrolysis, and combustion progressed. At the end of the combustion process, particle waste became ash, and the number of ash particles was enormous. To avoid an excessive computational load due to the high particle number, a similar assembly model was adopted to reduce the particle number in the calculation. There was a good agreement between the simulation and experimental results for the temperature at the outlet of the furnace and the flue gas composition.

Item Type: Article
Uncontrolled Keywords: Incinerator, DEM–CFD Simulation, Combustion, Waste
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 09 Nov 2016 01:58
Last Modified: 12 Mar 2018 03:06
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