Three-dimensional CFD simulation and experimental validation of particle segregation in CFB riser
Purpose The purpose of this paper is to perform the computational fluid dynamics (CFD) simulation with experimental validation to investigate the particle segregation effect in abrupt and smooth shapes circulating fluidized bed (CFB) risers. Design/methodology/approach The experimental investigation...
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| Veröffentlicht in: | International journal of numerical methods for heat & fluid flow 2021-03, Vol.31 (4), p.1144-1171 |
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| creator | Dwivedi, Krishna Kant Pramanick, Achintya Kumar Karmakar, Malay Kumar Chatterjee, Pradip Kumar |
| description | Purpose
The purpose of this paper is to perform the computational fluid dynamics (CFD) simulation with experimental validation to investigate the particle segregation effect in abrupt and smooth shapes circulating fluidized bed (CFB) risers.
Design/methodology/approach
The experimental investigations were carried out in lab-scale CFB systems and the CFD simulations were performed by using commercial software BARRACUDA. Special attention was paid to investigate the gas-particle flow behavior at the top of the riser with three different superficial velocities, namely, 4, 6 and 7.7 m/s. Here, a CFD-based noble simulation approach called multi-phase particle in cell (MP-PIC) was used to investigate the effect of traditional drag models (Wen-Yu, Ergun, Wen-Yu-Ergun and Richardson-Davidson-Harrison) on particle flow characteristics in CFB riser.
Findings
Findings from the experimentations revealed that the increase in gas velocity leads to decrease the mixing index inside the riser. Moreover, the solid holdup found more in abrupt riser than smooth riser at the constant gas velocity. Despite the more experimental investigations, the findings with CFD simulations revealed that the MP-PIC approach, which was combined with different drag models could be more effective for the practical (industrial) design of CFB riser. Well agreement was found between the simulation and experimental outputs. The simulation work was compared with experimental data, which shows the good agreement ( |
| doi_str_mv | 10.1108/HFF-04-2020-0197 |
| format | Article |
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The purpose of this paper is to perform the computational fluid dynamics (CFD) simulation with experimental validation to investigate the particle segregation effect in abrupt and smooth shapes circulating fluidized bed (CFB) risers.
Design/methodology/approach
The experimental investigations were carried out in lab-scale CFB systems and the CFD simulations were performed by using commercial software BARRACUDA. Special attention was paid to investigate the gas-particle flow behavior at the top of the riser with three different superficial velocities, namely, 4, 6 and 7.7 m/s. Here, a CFD-based noble simulation approach called multi-phase particle in cell (MP-PIC) was used to investigate the effect of traditional drag models (Wen-Yu, Ergun, Wen-Yu-Ergun and Richardson-Davidson-Harrison) on particle flow characteristics in CFB riser.
Findings
Findings from the experimentations revealed that the increase in gas velocity leads to decrease the mixing index inside the riser. Moreover, the solid holdup found more in abrupt riser than smooth riser at the constant gas velocity. Despite the more experimental investigations, the findings with CFD simulations revealed that the MP-PIC approach, which was combined with different drag models could be more effective for the practical (industrial) design of CFB riser. Well agreement was found between the simulation and experimental outputs. The simulation work was compared with experimental data, which shows the good agreement (<4%).
Originality/value
The experimental and simulation study performed in this research study constitutes an easy-to-use with different drag coefficient. The proposed MP-PIC model is more effective for large particles fluidized bed, which can be helpful for further research on industrial gas-particle fluidized bed reactors. This study is expected to give throughout the analysis of CFB hydrodynamics with further exploration of overall fluidization.</description><identifier>ISSN: 0961-5539</identifier><identifier>EISSN: 1758-6585</identifier><identifier>DOI: 10.1108/HFF-04-2020-0197</identifier><language>eng</language><publisher>Bradford: Emerald Publishing Limited</publisher><subject>Computational fluid dynamics ; Drag coefficient ; Drag coefficients ; Flow characteristics ; Fluid dynamics ; Fluid flow ; Fluid mechanics ; Fluidization ; Fluidized bed reactors ; Fluidized beds ; Gases ; Geometry ; Hydrodynamics ; Investigations ; Marine fishes ; Mathematical models ; Particle segregation ; Particle size ; Reynolds number ; Risers ; Segregation ; Simulation ; Velocity</subject><ispartof>International journal of numerical methods for heat & fluid flow, 2021-03, Vol.31 (4), p.1144-1171</ispartof><rights>Emerald Publishing Limited</rights><rights>Emerald Publishing Limited 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c311t-94d45cf3d3d88459a2a21a8384e69d17c16d26c09948dbff340d57960a69e593</citedby><cites>FETCH-LOGICAL-c311t-94d45cf3d3d88459a2a21a8384e69d17c16d26c09948dbff340d57960a69e593</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.emerald.com/insight/content/doi/10.1108/HFF-04-2020-0197/full/html$$EHTML$$P50$$Gemerald$$H</linktohtml><link.rule.ids>314,780,784,967,11635,27924,27925,52689</link.rule.ids></links><search><creatorcontrib>Dwivedi, Krishna Kant</creatorcontrib><creatorcontrib>Pramanick, Achintya Kumar</creatorcontrib><creatorcontrib>Karmakar, Malay Kumar</creatorcontrib><creatorcontrib>Chatterjee, Pradip Kumar</creatorcontrib><title>Three-dimensional CFD simulation and experimental validation of particle segregation in CFB riser</title><title>International journal of numerical methods for heat & fluid flow</title><description>Purpose
The purpose of this paper is to perform the computational fluid dynamics (CFD) simulation with experimental validation to investigate the particle segregation effect in abrupt and smooth shapes circulating fluidized bed (CFB) risers.
Design/methodology/approach
The experimental investigations were carried out in lab-scale CFB systems and the CFD simulations were performed by using commercial software BARRACUDA. Special attention was paid to investigate the gas-particle flow behavior at the top of the riser with three different superficial velocities, namely, 4, 6 and 7.7 m/s. Here, a CFD-based noble simulation approach called multi-phase particle in cell (MP-PIC) was used to investigate the effect of traditional drag models (Wen-Yu, Ergun, Wen-Yu-Ergun and Richardson-Davidson-Harrison) on particle flow characteristics in CFB riser.
Findings
Findings from the experimentations revealed that the increase in gas velocity leads to decrease the mixing index inside the riser. Moreover, the solid holdup found more in abrupt riser than smooth riser at the constant gas velocity. Despite the more experimental investigations, the findings with CFD simulations revealed that the MP-PIC approach, which was combined with different drag models could be more effective for the practical (industrial) design of CFB riser. Well agreement was found between the simulation and experimental outputs. The simulation work was compared with experimental data, which shows the good agreement (<4%).
Originality/value
The experimental and simulation study performed in this research study constitutes an easy-to-use with different drag coefficient. The proposed MP-PIC model is more effective for large particles fluidized bed, which can be helpful for further research on industrial gas-particle fluidized bed reactors. This study is expected to give throughout the analysis of CFB hydrodynamics with further exploration of overall fluidization.</description><subject>Computational fluid dynamics</subject><subject>Drag coefficient</subject><subject>Drag coefficients</subject><subject>Flow characteristics</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Fluid mechanics</subject><subject>Fluidization</subject><subject>Fluidized bed reactors</subject><subject>Fluidized beds</subject><subject>Gases</subject><subject>Geometry</subject><subject>Hydrodynamics</subject><subject>Investigations</subject><subject>Marine fishes</subject><subject>Mathematical models</subject><subject>Particle segregation</subject><subject>Particle size</subject><subject>Reynolds number</subject><subject>Risers</subject><subject>Segregation</subject><subject>Simulation</subject><subject>Velocity</subject><issn>0961-5539</issn><issn>1758-6585</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNptkM1LxDAUxIMouK7ePRY8x31pPpocdbUqLHjZe4jN65ql29akK_rf21IvgqcH82YG5kfINYNbxkCvnsuSgqA55ECBmeKELFghNVVSy1OyAKMYlZKbc3KR0h4ApBJqQdz2PSJSHw7YptC1rsnW5UOWwuHYuGEUMtf6DL96jJNlGP-frgl-_nV11rs4hKrBLOEu4m7WQzu23GcxJIyX5Kx2TcKr37sk2_Jxu36mm9enl_XdhlacsYEa4YWsau6511pI43KXM6e5FqiMZ0XFlM9VBcYI7d_qmgvwsjAKnDIoDV-Sm7m2j93HEdNg990xjnuSzSUXXDAuJhfMrip2KUWsbT_ucvHbMrATRztytCDsxNFOHMfIao7gAaNr_H-JP-T5D-i7c2s</recordid><startdate>20210319</startdate><enddate>20210319</enddate><creator>Dwivedi, Krishna Kant</creator><creator>Pramanick, Achintya 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CFD simulation and experimental validation of particle segregation in CFB riser</title><author>Dwivedi, Krishna Kant ; Pramanick, Achintya Kumar ; Karmakar, Malay Kumar ; Chatterjee, Pradip Kumar</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c311t-94d45cf3d3d88459a2a21a8384e69d17c16d26c09948dbff340d57960a69e593</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Computational fluid dynamics</topic><topic>Drag coefficient</topic><topic>Drag coefficients</topic><topic>Flow characteristics</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Fluid mechanics</topic><topic>Fluidization</topic><topic>Fluidized bed reactors</topic><topic>Fluidized beds</topic><topic>Gases</topic><topic>Geometry</topic><topic>Hydrodynamics</topic><topic>Investigations</topic><topic>Marine fishes</topic><topic>Mathematical models</topic><topic>Particle segregation</topic><topic>Particle size</topic><topic>Reynolds number</topic><topic>Risers</topic><topic>Segregation</topic><topic>Simulation</topic><topic>Velocity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dwivedi, Krishna Kant</creatorcontrib><creatorcontrib>Pramanick, Achintya Kumar</creatorcontrib><creatorcontrib>Karmakar, Malay Kumar</creatorcontrib><creatorcontrib>Chatterjee, Pradip Kumar</creatorcontrib><collection>CrossRef</collection><collection>Global News & ABI/Inform Professional</collection><collection>Trade PRO</collection><collection>Computer and Information Systems Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Access via ABI/INFORM (ProQuest)</collection><collection>ABI/INFORM Global (PDF only)</collection><collection>ProQuest Central (purchase pre-March 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Kumar</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Three-dimensional CFD simulation and experimental validation of particle segregation in CFB riser</atitle><jtitle>International journal of numerical methods for heat & fluid flow</jtitle><date>2021-03-19</date><risdate>2021</risdate><volume>31</volume><issue>4</issue><spage>1144</spage><epage>1171</epage><pages>1144-1171</pages><issn>0961-5539</issn><eissn>1758-6585</eissn><abstract>Purpose
The purpose of this paper is to perform the computational fluid dynamics (CFD) simulation with experimental validation to investigate the particle segregation effect in abrupt and smooth shapes circulating fluidized bed (CFB) risers.
Design/methodology/approach
The experimental investigations were carried out in lab-scale CFB systems and the CFD simulations were performed by using commercial software BARRACUDA. Special attention was paid to investigate the gas-particle flow behavior at the top of the riser with three different superficial velocities, namely, 4, 6 and 7.7 m/s. Here, a CFD-based noble simulation approach called multi-phase particle in cell (MP-PIC) was used to investigate the effect of traditional drag models (Wen-Yu, Ergun, Wen-Yu-Ergun and Richardson-Davidson-Harrison) on particle flow characteristics in CFB riser.
Findings
Findings from the experimentations revealed that the increase in gas velocity leads to decrease the mixing index inside the riser. Moreover, the solid holdup found more in abrupt riser than smooth riser at the constant gas velocity. Despite the more experimental investigations, the findings with CFD simulations revealed that the MP-PIC approach, which was combined with different drag models could be more effective for the practical (industrial) design of CFB riser. Well agreement was found between the simulation and experimental outputs. The simulation work was compared with experimental data, which shows the good agreement (<4%).
Originality/value
The experimental and simulation study performed in this research study constitutes an easy-to-use with different drag coefficient. The proposed MP-PIC model is more effective for large particles fluidized bed, which can be helpful for further research on industrial gas-particle fluidized bed reactors. This study is expected to give throughout the analysis of CFB hydrodynamics with further exploration of overall fluidization.</abstract><cop>Bradford</cop><pub>Emerald Publishing Limited</pub><doi>10.1108/HFF-04-2020-0197</doi><tpages>28</tpages></addata></record> |
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| identifier | ISSN: 0961-5539 |
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| recordid | cdi_emerald_primary_10_1108_HFF-04-2020-0197 |
| source | Emerald Complete Journals |
| subjects | Computational fluid dynamics Drag coefficient Drag coefficients Flow characteristics Fluid dynamics Fluid flow Fluid mechanics Fluidization Fluidized bed reactors Fluidized beds Gases Geometry Hydrodynamics Investigations Marine fishes Mathematical models Particle segregation Particle size Reynolds number Risers Segregation Simulation Velocity |
| title | Three-dimensional CFD simulation and experimental validation of particle segregation in CFB riser |
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