Numerical modeling of 3-D turbulent two-phase flow and coal combustion in a pulverized-coal combustor |
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Authors: | Zhou Biao Wu Chengkang |
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Institution: | (1) Combustion Laboratory, Institute of Mechanics, Chinese Academy of Sciences, 100080 Beijing, China;(2) Present address: Department of Mechanical and Aerospace Engineering, Princeton University, 08544 Princeton, NJ, USA |
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Abstract: | In the present paper, a multifluid model of two-phase flows with pulverized-coal combustion, based on a continuum-trajectory
model with reacting particle phase, is developed and employed to simulate the 3-D turbulent two-phase flows and combustion
in a new type of pulverized-coal combustor with one primary-air jet placed along the wall of the combustor. The results show
that: (1) this continuum-trajectory model with reacting particle phase can be used in practical engineering to qualitatively
predict the flame stability, concentrations of gas species, possibilities of slag formation and soot deposition, etc.; (2)
large recirculation zones can be created in the combustor, which is favorable to the ignition and flame stabilization.
Sponsored by the National Key Projects of Fundamental Research of China. |
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Keywords: | numerical simulation pulverized-coal combustor two-phase flow |
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