Investigation of collisional parameters for rough spheres in fluidized beds
The effect of normal restitution coefficient and friction coefficient on the hydrodynamics of a dense bubbling solid-gas fluidized bed is investigated using a two fluid model (TFM) based on our kinetic theory of granular flow (KTGF) for rotating frictional particles. A comparison between TFM simulat...
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| Veröffentlicht in: | Powder technology 2017-07, Vol.316, p.256-264 |
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| creator | Yang, Lei Padding, J.T. (Johan) Kuipers, J.A.M. (Hans) |
| description | The effect of normal restitution coefficient and friction coefficient on the hydrodynamics of a dense bubbling solid-gas fluidized bed is investigated using a two fluid model (TFM) based on our kinetic theory of granular flow (KTGF) for rotating frictional particles. A comparison between TFM simulations using the present KTGF model, and a simpler KTGF model for rapid flows of slightly frictional, nearly elastic spheres derived by Jenkins and Zhang [1], is carried out. The simulation results reveal that both the coefficient of normal restitution and friction coefficient play an important role in the homogeneity of the bubbling bed. The particle friction has a strong effect on the solids flow patterns and distribution, while the normal restitution coefficient has a relatively small effect on both. The present model also predicts a larger amount of energy dissipation caused by the inclusion of particle friction. The present KTGF model leads to better agreement with detailed discrete particle model (DPM) simulation results for the axial particle velocity profiles and solids volume fraction distribution.
Energy dissipation rate of both TFM models for different normal restitution coefficients. [Display omitted]
•A kinetic theory of granular flow for 3D frictional spheres is applied for dense fluidized beds.•Investigation of normal restitution coefficient and friction coefficient on bed hydrodynamics is carried out.•Comparison is made with DPM simulations and a simpler kinetic theory. |
| doi_str_mv | 10.1016/j.powtec.2016.12.090 |
| format | Article |
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Energy dissipation rate of both TFM models for different normal restitution coefficients. [Display omitted]
•A kinetic theory of granular flow for 3D frictional spheres is applied for dense fluidized beds.•Investigation of normal restitution coefficient and friction coefficient on bed hydrodynamics is carried out.•Comparison is made with DPM simulations and a simpler kinetic theory.</description><identifier>ISSN: 0032-5910</identifier><identifier>EISSN: 1873-328X</identifier><identifier>DOI: 10.1016/j.powtec.2016.12.090</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Bubbling ; Computational fluid dynamics ; Computer simulation ; Concentration (composition) ; Discrete particle model ; Energy dissipation ; Fluid flow ; Fluidization ; Fluidized bed reactors ; Fluidized beds ; Friction ; Homogeneity ; Hydrodynamics ; Kinetic theory ; Rotation ; Rough particles ; Simulation ; Solids ; Solids flow ; Studies ; Two-fluid model</subject><ispartof>Powder technology, 2017-07, Vol.316, p.256-264</ispartof><rights>2017 The Authors</rights><rights>Copyright Elsevier BV Jul 1, 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c380t-ec6b8223480c6ee55a25906abe3332ca5697d343749d6af293f83f3e0445252b3</citedby><cites>FETCH-LOGICAL-c380t-ec6b8223480c6ee55a25906abe3332ca5697d343749d6af293f83f3e0445252b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.powtec.2016.12.090$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Yang, Lei</creatorcontrib><creatorcontrib>Padding, J.T. (Johan)</creatorcontrib><creatorcontrib>Kuipers, J.A.M. (Hans)</creatorcontrib><title>Investigation of collisional parameters for rough spheres in fluidized beds</title><title>Powder technology</title><description>The effect of normal restitution coefficient and friction coefficient on the hydrodynamics of a dense bubbling solid-gas fluidized bed is investigated using a two fluid model (TFM) based on our kinetic theory of granular flow (KTGF) for rotating frictional particles. A comparison between TFM simulations using the present KTGF model, and a simpler KTGF model for rapid flows of slightly frictional, nearly elastic spheres derived by Jenkins and Zhang [1], is carried out. The simulation results reveal that both the coefficient of normal restitution and friction coefficient play an important role in the homogeneity of the bubbling bed. The particle friction has a strong effect on the solids flow patterns and distribution, while the normal restitution coefficient has a relatively small effect on both. The present model also predicts a larger amount of energy dissipation caused by the inclusion of particle friction. The present KTGF model leads to better agreement with detailed discrete particle model (DPM) simulation results for the axial particle velocity profiles and solids volume fraction distribution.
Energy dissipation rate of both TFM models for different normal restitution coefficients. [Display omitted]
•A kinetic theory of granular flow for 3D frictional spheres is applied for dense fluidized beds.•Investigation of normal restitution coefficient and friction coefficient on bed hydrodynamics is carried out.•Comparison is made with DPM simulations and a simpler kinetic theory.</description><subject>Bubbling</subject><subject>Computational fluid dynamics</subject><subject>Computer simulation</subject><subject>Concentration (composition)</subject><subject>Discrete particle model</subject><subject>Energy dissipation</subject><subject>Fluid flow</subject><subject>Fluidization</subject><subject>Fluidized bed reactors</subject><subject>Fluidized beds</subject><subject>Friction</subject><subject>Homogeneity</subject><subject>Hydrodynamics</subject><subject>Kinetic theory</subject><subject>Rotation</subject><subject>Rough particles</subject><subject>Simulation</subject><subject>Solids</subject><subject>Solids flow</subject><subject>Studies</subject><subject>Two-fluid model</subject><issn>0032-5910</issn><issn>1873-328X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAUhYMoOI7-AxcB1603SZ8bQQYfgwNuFNyFNL2ZSek0NWlH9Nfboa5dXQ6cczj3I-SaQcyAZbdN3LuvAXXMJxUzHkMJJ2TBilxEghcfp2QBIHiUlgzOyUUIDQBkgsGCvKy7A4bBbtVgXUedodq1rQ2TUC3tlVd7HNAHapyn3o3bHQ39Dj0Gajtq2tHW9gdrWmEdLsmZUW3Aq7-7JO-PD2-r52jz-rRe3W8iLQoYItRZVXAukgJ0hpimiqclZKpCIQTXKs3KvBaJyJOyzpThpTCFMAIhSVKe8kosyc3c23v3OU7rZeNGP-0NkpVJDkWSCza5ktmlvQvBo5G9t3vlvyUDecQmGzljk0dsknE5YZtid3MMpw8OFr0M2mKnsbYe9SBrZ_8v-AXc2nf7</recordid><startdate>20170701</startdate><enddate>20170701</enddate><creator>Yang, Lei</creator><creator>Padding, J.T. (Johan)</creator><creator>Kuipers, J.A.M. (Hans)</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7ST</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>JG9</scope><scope>SOI</scope></search><sort><creationdate>20170701</creationdate><title>Investigation of collisional parameters for rough spheres in fluidized beds</title><author>Yang, Lei ; Padding, J.T. (Johan) ; Kuipers, J.A.M. (Hans)</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c380t-ec6b8223480c6ee55a25906abe3332ca5697d343749d6af293f83f3e0445252b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Bubbling</topic><topic>Computational fluid dynamics</topic><topic>Computer simulation</topic><topic>Concentration (composition)</topic><topic>Discrete particle model</topic><topic>Energy dissipation</topic><topic>Fluid flow</topic><topic>Fluidization</topic><topic>Fluidized bed reactors</topic><topic>Fluidized beds</topic><topic>Friction</topic><topic>Homogeneity</topic><topic>Hydrodynamics</topic><topic>Kinetic theory</topic><topic>Rotation</topic><topic>Rough particles</topic><topic>Simulation</topic><topic>Solids</topic><topic>Solids flow</topic><topic>Studies</topic><topic>Two-fluid model</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Lei</creatorcontrib><creatorcontrib>Padding, J.T. (Johan)</creatorcontrib><creatorcontrib>Kuipers, J.A.M. (Hans)</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Materials Research Database</collection><collection>Environment Abstracts</collection><jtitle>Powder technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Lei</au><au>Padding, J.T. (Johan)</au><au>Kuipers, J.A.M. (Hans)</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of collisional parameters for rough spheres in fluidized beds</atitle><jtitle>Powder technology</jtitle><date>2017-07-01</date><risdate>2017</risdate><volume>316</volume><spage>256</spage><epage>264</epage><pages>256-264</pages><issn>0032-5910</issn><eissn>1873-328X</eissn><abstract>The effect of normal restitution coefficient and friction coefficient on the hydrodynamics of a dense bubbling solid-gas fluidized bed is investigated using a two fluid model (TFM) based on our kinetic theory of granular flow (KTGF) for rotating frictional particles. A comparison between TFM simulations using the present KTGF model, and a simpler KTGF model for rapid flows of slightly frictional, nearly elastic spheres derived by Jenkins and Zhang [1], is carried out. The simulation results reveal that both the coefficient of normal restitution and friction coefficient play an important role in the homogeneity of the bubbling bed. The particle friction has a strong effect on the solids flow patterns and distribution, while the normal restitution coefficient has a relatively small effect on both. The present model also predicts a larger amount of energy dissipation caused by the inclusion of particle friction. The present KTGF model leads to better agreement with detailed discrete particle model (DPM) simulation results for the axial particle velocity profiles and solids volume fraction distribution.
Energy dissipation rate of both TFM models for different normal restitution coefficients. [Display omitted]
•A kinetic theory of granular flow for 3D frictional spheres is applied for dense fluidized beds.•Investigation of normal restitution coefficient and friction coefficient on bed hydrodynamics is carried out.•Comparison is made with DPM simulations and a simpler kinetic theory.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.powtec.2016.12.090</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Bubbling Computational fluid dynamics Computer simulation Concentration (composition) Discrete particle model Energy dissipation Fluid flow Fluidization Fluidized bed reactors Fluidized beds Friction Homogeneity Hydrodynamics Kinetic theory Rotation Rough particles Simulation Solids Solids flow Studies Two-fluid model |
| title | Investigation of collisional parameters for rough spheres in fluidized beds |
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