Drag force model corrections based on nonuniform particle distributions in multi-particle systems
The drag force is one major particle–fluid interaction force in multiphase flows. Conventional drag force models do not accurately consider the effect of nonuniform particle distributions which limits their applicability with considerable nonuniform particle distributions. A meshless method (Element...
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| Veröffentlicht in: | Powder technology 2011-05, Vol.209 (1), p.112-118 |
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| creator | Wang, Xi Liu, Kai You, Changfu |
| description | The drag force is one major particle–fluid interaction force in multiphase flows. Conventional drag force models do not accurately consider the effect of nonuniform particle distributions which limits their applicability with considerable nonuniform particle distributions. A meshless method (Element-Free Gelerkin method) was used for direct numerical simulations to simulate real particle collisions and investigate the drag coefficient variations in various nonuniform particle distributions. The classical drag force model is corrected using nonuniformity coefficients based on various nonuniform particle distributions in various multiphase flow types. The results show that the nonuniform particle distribution greatly affects the drag coefficient with different compacting directions having different results. In most situations, only the effect of compacting in the direction perpendicular to the main flow direction needs to be considered and the effect of compacting in the main flow direction can be neglected. The particle nonuniformity in the direction perpendicular to the main flow direction reflects the overall dynamic effect of the drag coefficient while the nonuniformity in the main flow direction reflects local fluctuations. Thus, the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient. It can be more widely used than conventional drag force models.
This paper uses a meshless method to model real particle collisions to investigate the drag coefficient variations in various nonuniform particle distributions. The results show that the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient so it should be more widely used than conventional drag force models.
[Display omitted]
►Nonuniformities perpendicular to flow direction reflect the overall dynamic effect. ►Nonuniformities in main flow direction reflect the local fluctuations. ►Modified model can accurately reflect the dynamic changes in the drag coefficients. |
| doi_str_mv | 10.1016/j.powtec.2011.02.018 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1677904559</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0032591011000738</els_id><sourcerecordid>1022891357</sourcerecordid><originalsourceid>FETCH-LOGICAL-c426t-d52528363226c0c9f6b7474029da21e3df5f70650937dc061f6f76475d098b623</originalsourceid><addsrcrecordid>eNqF0U1rHSEUBmApDfQ26T8oxE2gm5kcddSZTaCk-YJAF2mgO_H6EbzM6I3ONOTf18uELNuVC5_zKu9B6CuBlgAR57t2n15mZ1oKhLRAWyD9B7QhvWQNo_3vj2gDwGjDBwKf0OdSdgAgGIEN0j-yfsI-ZePwlKwbsUk5OzOHFAve6uIsThHHFJcYKpvwXuc5mNFhG8qcw3ZZaYh4WsY5NO_35bXMbion6Mjrsbgvb-cxery--nV529z_vLm7_H7fmI6KubGcctozwSgVBszgxVZ2sgM6WE2JY9ZzL0FwGJi0BgTxwkvRSW5h6LeCsmP0bc3d5_S8uDKrKRTjxlFHl5aiiJBygI7z4f8UKO0HwristFupyamU7Lza5zDp_FqROpSvdmotXx3KV0BVLb-Onb29oIvRo886mlDeZ2kHknHKqjtdnddJ6adczeNDDeJQo3lPDuJiFa529ye4rIoJLhpnw2FNyqbw76_8BUVHpY4</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1022891357</pqid></control><display><type>article</type><title>Drag force model corrections based on nonuniform particle distributions in multi-particle systems</title><source>Elsevier ScienceDirect Journals</source><creator>Wang, Xi ; Liu, Kai ; You, Changfu</creator><creatorcontrib>Wang, Xi ; Liu, Kai ; You, Changfu</creatorcontrib><description>The drag force is one major particle–fluid interaction force in multiphase flows. Conventional drag force models do not accurately consider the effect of nonuniform particle distributions which limits their applicability with considerable nonuniform particle distributions. A meshless method (Element-Free Gelerkin method) was used for direct numerical simulations to simulate real particle collisions and investigate the drag coefficient variations in various nonuniform particle distributions. The classical drag force model is corrected using nonuniformity coefficients based on various nonuniform particle distributions in various multiphase flow types. The results show that the nonuniform particle distribution greatly affects the drag coefficient with different compacting directions having different results. In most situations, only the effect of compacting in the direction perpendicular to the main flow direction needs to be considered and the effect of compacting in the main flow direction can be neglected. The particle nonuniformity in the direction perpendicular to the main flow direction reflects the overall dynamic effect of the drag coefficient while the nonuniformity in the main flow direction reflects local fluctuations. Thus, the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient. It can be more widely used than conventional drag force models.
This paper uses a meshless method to model real particle collisions to investigate the drag coefficient variations in various nonuniform particle distributions. The results show that the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient so it should be more widely used than conventional drag force models.
[Display omitted]
►Nonuniformities perpendicular to flow direction reflect the overall dynamic effect. ►Nonuniformities in main flow direction reflect the local fluctuations. ►Modified model can accurately reflect the dynamic changes in the drag coefficients.</description><identifier>ISSN: 0032-5910</identifier><identifier>EISSN: 1873-328X</identifier><identifier>DOI: 10.1016/j.powtec.2011.02.018</identifier><identifier>CODEN: POTEBX</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Chemical engineering ; Compacting ; drag coefficient ; Drag coefficients ; Drag force ; Dynamics ; Exact sciences and technology ; Hydrodynamics of contact apparatus ; Mathematical models ; Meshless method ; Miscellaneous ; Multiphase flow ; Nonuniform ; Nonuniformity ; Numerical analysis ; Particle ; particle size distribution ; particles ; simulation models ; Solid-solid systems ; Stress concentration ; Voidage</subject><ispartof>Powder technology, 2011-05, Vol.209 (1), p.112-118</ispartof><rights>2011 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c426t-d52528363226c0c9f6b7474029da21e3df5f70650937dc061f6f76475d098b623</citedby><cites>FETCH-LOGICAL-c426t-d52528363226c0c9f6b7474029da21e3df5f70650937dc061f6f76475d098b623</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0032591011000738$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24073523$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Xi</creatorcontrib><creatorcontrib>Liu, Kai</creatorcontrib><creatorcontrib>You, Changfu</creatorcontrib><title>Drag force model corrections based on nonuniform particle distributions in multi-particle systems</title><title>Powder technology</title><description>The drag force is one major particle–fluid interaction force in multiphase flows. Conventional drag force models do not accurately consider the effect of nonuniform particle distributions which limits their applicability with considerable nonuniform particle distributions. A meshless method (Element-Free Gelerkin method) was used for direct numerical simulations to simulate real particle collisions and investigate the drag coefficient variations in various nonuniform particle distributions. The classical drag force model is corrected using nonuniformity coefficients based on various nonuniform particle distributions in various multiphase flow types. The results show that the nonuniform particle distribution greatly affects the drag coefficient with different compacting directions having different results. In most situations, only the effect of compacting in the direction perpendicular to the main flow direction needs to be considered and the effect of compacting in the main flow direction can be neglected. The particle nonuniformity in the direction perpendicular to the main flow direction reflects the overall dynamic effect of the drag coefficient while the nonuniformity in the main flow direction reflects local fluctuations. Thus, the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient. It can be more widely used than conventional drag force models.
This paper uses a meshless method to model real particle collisions to investigate the drag coefficient variations in various nonuniform particle distributions. The results show that the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient so it should be more widely used than conventional drag force models.
[Display omitted]
►Nonuniformities perpendicular to flow direction reflect the overall dynamic effect. ►Nonuniformities in main flow direction reflect the local fluctuations. ►Modified model can accurately reflect the dynamic changes in the drag coefficients.</description><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Compacting</subject><subject>drag coefficient</subject><subject>Drag coefficients</subject><subject>Drag force</subject><subject>Dynamics</subject><subject>Exact sciences and technology</subject><subject>Hydrodynamics of contact apparatus</subject><subject>Mathematical models</subject><subject>Meshless method</subject><subject>Miscellaneous</subject><subject>Multiphase flow</subject><subject>Nonuniform</subject><subject>Nonuniformity</subject><subject>Numerical analysis</subject><subject>Particle</subject><subject>particle size distribution</subject><subject>particles</subject><subject>simulation models</subject><subject>Solid-solid systems</subject><subject>Stress concentration</subject><subject>Voidage</subject><issn>0032-5910</issn><issn>1873-328X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqF0U1rHSEUBmApDfQ26T8oxE2gm5kcddSZTaCk-YJAF2mgO_H6EbzM6I3ONOTf18uELNuVC5_zKu9B6CuBlgAR57t2n15mZ1oKhLRAWyD9B7QhvWQNo_3vj2gDwGjDBwKf0OdSdgAgGIEN0j-yfsI-ZePwlKwbsUk5OzOHFAve6uIsThHHFJcYKpvwXuc5mNFhG8qcw3ZZaYh4WsY5NO_35bXMbion6Mjrsbgvb-cxery--nV529z_vLm7_H7fmI6KubGcctozwSgVBszgxVZ2sgM6WE2JY9ZzL0FwGJi0BgTxwkvRSW5h6LeCsmP0bc3d5_S8uDKrKRTjxlFHl5aiiJBygI7z4f8UKO0HwristFupyamU7Lza5zDp_FqROpSvdmotXx3KV0BVLb-Onb29oIvRo886mlDeZ2kHknHKqjtdnddJ6adczeNDDeJQo3lPDuJiFa529ye4rIoJLhpnw2FNyqbw76_8BUVHpY4</recordid><startdate>20110515</startdate><enddate>20110515</enddate><creator>Wang, Xi</creator><creator>Liu, Kai</creator><creator>You, Changfu</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20110515</creationdate><title>Drag force model corrections based on nonuniform particle distributions in multi-particle systems</title><author>Wang, Xi ; Liu, Kai ; You, Changfu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c426t-d52528363226c0c9f6b7474029da21e3df5f70650937dc061f6f76475d098b623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Compacting</topic><topic>drag coefficient</topic><topic>Drag coefficients</topic><topic>Drag force</topic><topic>Dynamics</topic><topic>Exact sciences and technology</topic><topic>Hydrodynamics of contact apparatus</topic><topic>Mathematical models</topic><topic>Meshless method</topic><topic>Miscellaneous</topic><topic>Multiphase flow</topic><topic>Nonuniform</topic><topic>Nonuniformity</topic><topic>Numerical analysis</topic><topic>Particle</topic><topic>particle size distribution</topic><topic>particles</topic><topic>simulation models</topic><topic>Solid-solid systems</topic><topic>Stress concentration</topic><topic>Voidage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Xi</creatorcontrib><creatorcontrib>Liu, Kai</creatorcontrib><creatorcontrib>You, Changfu</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Powder technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Xi</au><au>Liu, Kai</au><au>You, Changfu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Drag force model corrections based on nonuniform particle distributions in multi-particle systems</atitle><jtitle>Powder technology</jtitle><date>2011-05-15</date><risdate>2011</risdate><volume>209</volume><issue>1</issue><spage>112</spage><epage>118</epage><pages>112-118</pages><issn>0032-5910</issn><eissn>1873-328X</eissn><coden>POTEBX</coden><abstract>The drag force is one major particle–fluid interaction force in multiphase flows. Conventional drag force models do not accurately consider the effect of nonuniform particle distributions which limits their applicability with considerable nonuniform particle distributions. A meshless method (Element-Free Gelerkin method) was used for direct numerical simulations to simulate real particle collisions and investigate the drag coefficient variations in various nonuniform particle distributions. The classical drag force model is corrected using nonuniformity coefficients based on various nonuniform particle distributions in various multiphase flow types. The results show that the nonuniform particle distribution greatly affects the drag coefficient with different compacting directions having different results. In most situations, only the effect of compacting in the direction perpendicular to the main flow direction needs to be considered and the effect of compacting in the main flow direction can be neglected. The particle nonuniformity in the direction perpendicular to the main flow direction reflects the overall dynamic effect of the drag coefficient while the nonuniformity in the main flow direction reflects local fluctuations. Thus, the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient. It can be more widely used than conventional drag force models.
This paper uses a meshless method to model real particle collisions to investigate the drag coefficient variations in various nonuniform particle distributions. The results show that the modified drag force model considering the nonuniform distribution more accurately reflects the dynamic effect of the drag coefficient so it should be more widely used than conventional drag force models.
[Display omitted]
►Nonuniformities perpendicular to flow direction reflect the overall dynamic effect. ►Nonuniformities in main flow direction reflect the local fluctuations. ►Modified model can accurately reflect the dynamic changes in the drag coefficients.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.powtec.2011.02.018</doi><tpages>7</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Chemical engineering Compacting drag coefficient Drag coefficients Drag force Dynamics Exact sciences and technology Hydrodynamics of contact apparatus Mathematical models Meshless method Miscellaneous Multiphase flow Nonuniform Nonuniformity Numerical analysis Particle particle size distribution particles simulation models Solid-solid systems Stress concentration Voidage |
| title | Drag force model corrections based on nonuniform particle distributions in multi-particle systems |
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