Application of analytical and CFD models of liquid fuels combustion in a fluidized bed
In Laboratory for Thermal Engineering and Energy of Institute Vinča, University of Belgrade, a 2-D CFD modeling procedure of numerical simulation of unconventional liquid fuel combustion in bubbling fluidized bed has been developed. This procedure is based on a two-fluid Euler-Euler approach modelin...
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VINCA Institute of Nuclear Sciences
2019-01-01
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doaj-2d7a2ca3262441b6a5061ee10ca10d772021-01-02T13:48:02ZengVINCA Institute of Nuclear SciencesThermal Science0354-98362019-01-0123Suppl. 51627163610.2298/TSCI180226317M0354-98361900317MApplication of analytical and CFD models of liquid fuels combustion in a fluidized bedMladenović Milica R.0Nemoda Stevan Đ.1Paprika Milijana J.2Marinković Ana D.3Laboratory for Thermal Engineering and Energy, Institute of Nuclear Sciences Vinča,Laboratory for Thermal Engineering and Energy, Institute of Nuclear Sciences Vinča,Laboratory for Thermal Engineering and Energy, Institute of Nuclear Sciences Vinča,Laboratory for Thermal Engineering and Energy, Institute of Nuclear Sciences Vinča,In Laboratory for Thermal Engineering and Energy of Institute Vinča, University of Belgrade, a 2-D CFD modeling procedure of numerical simulation of unconventional liquid fuel combustion in bubbling fluidized bed has been developed. This procedure is based on a two-fluid Euler-Euler approach modeling a fluidized bed with the determination of the velocities field of gas and particulates in two-phase, granular flows, analog to the kinetic theory of gases. This model describes in detail the unsteady motion of gas and solid phases, the formation and movement of bubbles with the combustion process in the fluidized bed, but temperature profiles calculated by the bed height differ to some extent from the experimentally obtained profiles. This discrepancy is probably due to the inability of a two-fluid CFD model to give a realistic simulation of the liquid fuel mixing in a fluidized bed. Therefore, an analytical model has been developed, where one of the basic assumptions is that the particles are mixed in the vertical direction of fluidized bed mainly by the bubble wakes. The proposed zonal type of calculating procedure is based on Davidson and Harrison two-phase model of the bubbling fluidized bed, where fluidized bed is divided into zones within which material and energy balances are set.http://www.doiserbia.nb.rs/img/doi/0354-9836/2019/0354-98361900317M.pdffluidized bedcombustionanalytical modelcfd model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mladenović Milica R. Nemoda Stevan Đ. Paprika Milijana J. Marinković Ana D. |
spellingShingle |
Mladenović Milica R. Nemoda Stevan Đ. Paprika Milijana J. Marinković Ana D. Application of analytical and CFD models of liquid fuels combustion in a fluidized bed Thermal Science fluidized bed combustion analytical model cfd model |
author_facet |
Mladenović Milica R. Nemoda Stevan Đ. Paprika Milijana J. Marinković Ana D. |
author_sort |
Mladenović Milica R. |
title |
Application of analytical and CFD models of liquid fuels combustion in a fluidized bed |
title_short |
Application of analytical and CFD models of liquid fuels combustion in a fluidized bed |
title_full |
Application of analytical and CFD models of liquid fuels combustion in a fluidized bed |
title_fullStr |
Application of analytical and CFD models of liquid fuels combustion in a fluidized bed |
title_full_unstemmed |
Application of analytical and CFD models of liquid fuels combustion in a fluidized bed |
title_sort |
application of analytical and cfd models of liquid fuels combustion in a fluidized bed |
publisher |
VINCA Institute of Nuclear Sciences |
series |
Thermal Science |
issn |
0354-9836 |
publishDate |
2019-01-01 |
description |
In Laboratory for Thermal Engineering and Energy of Institute Vinča, University of Belgrade, a 2-D CFD modeling procedure of numerical simulation of unconventional liquid fuel combustion in bubbling fluidized bed has been developed. This procedure is based on a two-fluid Euler-Euler approach modeling a fluidized bed with the determination of the velocities field of gas and particulates in two-phase, granular flows, analog to the kinetic theory of gases. This model describes in detail the unsteady motion of gas and solid phases, the formation and movement of bubbles with the combustion process in the fluidized bed, but temperature profiles calculated by the bed height differ to some extent from the experimentally obtained profiles. This discrepancy is probably due to the inability of a two-fluid CFD model to give a realistic simulation of the liquid fuel mixing in a fluidized bed. Therefore, an analytical model has been developed, where one of the basic assumptions is that the particles are mixed in the vertical direction of fluidized bed mainly by the bubble wakes. The proposed zonal type of calculating procedure is based on Davidson and Harrison two-phase model of the bubbling fluidized bed, where fluidized bed is divided into zones within which material and energy balances are set. |
topic |
fluidized bed combustion analytical model cfd model |
url |
http://www.doiserbia.nb.rs/img/doi/0354-9836/2019/0354-98361900317M.pdf |
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