This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1016/j.fuel.2015.11.043 in citations.
Measurements and CFD Modeling of a Pulverzited Coal Flame With Emphasis on Ash Deposition
Measurements and CFD Modeling of a Pulverzited Coal Flame With Emphasis on Ash Deposition
Measurements of fly ash deposition in a 15 kW pulverized coal jet flame and CFD-based mathematical modeling have been performed. The deposits have been collected at two ports at particle Stokes numbers in the 0.02–0.34 range and particle kinetic energies not larger than 2×10-92×10-9 J. Inertial impa...
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Personal Name(s): | Beckmann, A. M. (Corresponding author) |
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Mancini, M. / Weber, R. / Seebold, Sören / Müller, Michael | |
Contributing Institute: |
Werkstoffstruktur und -eigenschaften; IEK-2 |
Published in: | Fuel, 167 (2016) S. 168-179 |
Imprint: |
New York, NY [u.a.]
Elsevier
2016
|
DOI: |
10.1016/j.fuel.2015.11.043 |
Document Type: |
Journal Article |
Research Program: |
Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) Efficient and Flexible Power Plants |
Publikationsportal JuSER |
Measurements of fly ash deposition in a 15 kW pulverized coal jet flame and CFD-based mathematical modeling have been performed. The deposits have been collected at two ports at particle Stokes numbers in the 0.02–0.34 range and particle kinetic energies not larger than 2×10-92×10-9 J. Inertial impaction and thermophoresis have been identified as main mechanisms of particle transport towards the deposition surfaces. Deposition rates on air-cooled probes (View the MathML source600–700°C surface temperature) have been measured to be 24% (Port 2) and 79.4% (Port 3) larger than those measured on uncooled probes (View the MathML source1150°C surface temperature) due to the enhanced role of thermophoresis. Complex dependencies of the deposition rate on the probe surface temperature and the probe location have been observed. The CFD-model predictions are able to reproduce these dependencies after adjustments to the particle sticking sub-model. The paper contains estimations of both the impaction and sticking efficiencies. |