Fluid flow pressure drop through an annular bed of spheres with wall effects
A model has been developed to predict the pressure drop for flow through an annular packed bed of spheres at random distribution. Ergun's equation, with a corrected flow velocity, is used. To consider the wall effect in the flow distribution, the annular section was divided into three regions:...
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| Veröffentlicht in: | Experimental thermal and fluid science 1998-07, Vol.17 (3), p.265-275 |
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| container_title | Experimental thermal and fluid science |
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| creator | Sodré, J.R. Parise, J.A.R. |
| description | A model has been developed to predict the pressure drop for flow through an annular packed bed of spheres at random distribution. Ergun's equation, with a corrected flow velocity, is used. To consider the wall effect in the flow distribution, the annular section was divided into three regions: the external and internal wall regions, and an intermediate one, called transition. To find an average flow velocity, to be used in Ergun's equation, a different treatment has been applied to the wall regions, with respect to the transition region. That was necessary due to the presence of a further wetted area and the distortion on the porosity distribution. Model prediction showed good agreement with experimental data. Experiments were carried out for fully developed turbulent flow of air, at steady state condition, through an annular bed with a radius ratio of 1.369 and a bed to particle diameter ratio of 8.258. |
| doi_str_mv | 10.1016/S0894-1777(97)10022-X |
| format | Article |
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Ergun's equation, with a corrected flow velocity, is used. To consider the wall effect in the flow distribution, the annular section was divided into three regions: the external and internal wall regions, and an intermediate one, called transition. To find an average flow velocity, to be used in Ergun's equation, a different treatment has been applied to the wall regions, with respect to the transition region. That was necessary due to the presence of a further wetted area and the distortion on the porosity distribution. Model prediction showed good agreement with experimental data. Experiments were carried out for fully developed turbulent flow of air, at steady state condition, through an annular bed with a radius ratio of 1.369 and a bed to particle diameter ratio of 8.258.</description><identifier>ISSN: 0894-1777</identifier><identifier>EISSN: 1879-2286</identifier><identifier>DOI: 10.1016/S0894-1777(97)10022-X</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Annular bed ; Applied sciences ; Chemical engineering ; Exact sciences and technology ; Heat and mass transfer. 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Ergun's equation, with a corrected flow velocity, is used. To consider the wall effect in the flow distribution, the annular section was divided into three regions: the external and internal wall regions, and an intermediate one, called transition. To find an average flow velocity, to be used in Ergun's equation, a different treatment has been applied to the wall regions, with respect to the transition region. That was necessary due to the presence of a further wetted area and the distortion on the porosity distribution. Model prediction showed good agreement with experimental data. Experiments were carried out for fully developed turbulent flow of air, at steady state condition, through an annular bed with a radius ratio of 1.369 and a bed to particle diameter ratio of 8.258.</description><subject>Annular bed</subject><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Exact sciences and technology</subject><subject>Heat and mass transfer. Packings, plates</subject><subject>Porosity</subject><subject>Pressure drop</subject><subject>Spheres packing</subject><subject>Transition flow</subject><subject>Turbulent flow</subject><subject>Wall flow</subject><issn>0894-1777</issn><issn>1879-2286</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNqFkMFKAzEQhoMoWKuPIOQgqIfVJM0mm5OIWBUKHlToLaTJxEbS3TXZtfj2bm3xKgzM5fvnZz6ETim5ooSK6xdSKV5QKeWFkpeUEMaK-R4a0UqqgrFK7KPRH3KIjnL-IIRUjJIRmk1jHxz2sVnjNkHOfQLsUtPibpma_n2JTT1M3UeT8AIcbjzO7RIGFK9Dt8RrEyMG78F2-RgdeBMznOz2GL1N71_vHovZ88PT3e2ssJyUXUErR8BTyaGyDCh3wtpSOOtEqThRUkwUVRPLrYLSCAPEc6UYqQhX1NKFnYzR-fZum5rPHnKnVyFbiNHU0PRZSy6o4FSqgSy3pE1Nzgm8blNYmfStKdEbefpXnt6Y0UrqX3l6PuTOdg0mWxN9MrUN-S_MmORlWQ7YzRaD4duvAElnG6C24EIahGjXhH-KfgDnDoNC</recordid><startdate>19980701</startdate><enddate>19980701</enddate><creator>Sodré, J.R.</creator><creator>Parise, J.A.R.</creator><general>Elsevier Inc</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TC</scope></search><sort><creationdate>19980701</creationdate><title>Fluid flow pressure drop through an annular bed of spheres with wall effects</title><author>Sodré, J.R. ; Parise, J.A.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c405t-18d0ef174e8c2e14d6cc56dcd6594097639193c4c9e5a6ae0f4992080491c1bc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Annular bed</topic><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Exact sciences and technology</topic><topic>Heat and mass transfer. Packings, plates</topic><topic>Porosity</topic><topic>Pressure drop</topic><topic>Spheres packing</topic><topic>Transition flow</topic><topic>Turbulent flow</topic><topic>Wall flow</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sodré, J.R.</creatorcontrib><creatorcontrib>Parise, J.A.R.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical Engineering Abstracts</collection><jtitle>Experimental thermal and fluid science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sodré, J.R.</au><au>Parise, J.A.R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fluid flow pressure drop through an annular bed of spheres with wall effects</atitle><jtitle>Experimental thermal and fluid science</jtitle><date>1998-07-01</date><risdate>1998</risdate><volume>17</volume><issue>3</issue><spage>265</spage><epage>275</epage><pages>265-275</pages><issn>0894-1777</issn><eissn>1879-2286</eissn><abstract>A model has been developed to predict the pressure drop for flow through an annular packed bed of spheres at random distribution. 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| ispartof | Experimental thermal and fluid science, 1998-07, Vol.17 (3), p.265-275 |
| issn | 0894-1777 1879-2286 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Annular bed Applied sciences Chemical engineering Exact sciences and technology Heat and mass transfer. Packings, plates Porosity Pressure drop Spheres packing Transition flow Turbulent flow Wall flow |
| title | Fluid flow pressure drop through an annular bed of spheres with wall effects |
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