Experimental and numerical investigation of air flow through the distributor plate in a laboratory-scale model of a bubbling fluidized bed boiler
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F22%3A00363156" target="_blank" >RIV/68407700:21220/22:00363156 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/22:00363156
Result on the web
<a href="https://doi.org/10.1007/s13160-022-00518-x" target="_blank" >https://doi.org/10.1007/s13160-022-00518-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s13160-022-00518-x" target="_blank" >10.1007/s13160-022-00518-x</a>
Alternative languages
Result language
angličtina
Original language name
Experimental and numerical investigation of air flow through the distributor plate in a laboratory-scale model of a bubbling fluidized bed boiler
Original language description
In fluidized bed boilers, the distributor plate is a perforated metal plate which forms the bottom of the combustion chamber and separates it from the windbox. It prevents the fluidized granular material from falling through. At the same time, it allows an even distribution of the fluidization air which flows through the small holes. In this contribution, we consider an experimental model of the fluidized bed boiler and study the dependence of pressure drop at the distributor plate on the air flow rate. Numerical simulations of turbulent flow through the detailed three-dimensional geometry of the device are compared to experimental measurements. Two different simulation tools are used: our in-house high performance GPU solver based on the lattice Boltzmann method (LBM) and the ANSYS Fluent CFD software based on the finite volume method (FVM). The accuracy of both methods is strongly dependent on the mesh/lattice resolution inside (and in the vicinity of) the small holes of the distributor plate. When similar resolutions are used, FVM provides more accurate results than the original LBM scheme. However, the accuracy of LBM can be significantly improved by changing the parameters of the collision model so that it outperforms FVM. A simple convergence study of all involved numerical methods indicates improvement of the results with mesh/lattice refinement. In addition, LBM uses a structured lattice with the same resolution in the whole domain, which allows it to provide a detailed information on the non-uniformity of the velocity field above the distributor plate. The obtained results can be utilized to design a simplified model of the distributor plate for the purpose of complex CFD simulations of multiphase flow and combustion in fluidized bed boilers.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Research centre for low-carbon energy technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Japan Journal of Industrial and Applied Mathematics
ISSN
0916-7005
e-ISSN
1868-937X
Volume of the periodical
39
Issue of the periodical within the volume
12
Country of publishing house
CH - SWITZERLAND
Number of pages
16
Pages from-to
943-958
UT code for WoS article
000825216900001
EID of the result in the Scopus database
2-s2.0-85133604916