TY  - JOUR
AU  - Beckmann, A. M.
AU  - Mancini, M.
AU  - Weber, R.
AU  - Seebold, Sören
AU  - Müller, Michael
TI  - Measurements and CFD Modeling of a Pulverzited Coal Flame With Emphasis on Ash Deposition
JO  - Fuel
VL  - 167
SN  - 0016-2361
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2016-02322
SP  - 168-179
PY  - 2016
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000366651400019
DO  - DOI:10.1016/j.fuel.2015.11.043
UR  - https://juser.fz-juelich.de/record/808695
ER  -