Application of Ergun equation to computation of critical shear velocity subject to seepage
The Ergun equation that is widely used in chemical engineering is generalized for describing seepage through the sediment boundaries in this study. Comparisons with the measurements of the hydraulic gradient for flows through packed beds show that the Ergun equation may not be suitable for the trans...
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| Format: | Journal Article |
| Language: | English |
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2012
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| Online Access: | https://hdl.handle.net/10356/94299 http://hdl.handle.net/10220/7652 |
| _version_ | 1826113210748502016 |
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| author | Cheng, Nian-Sheng |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Cheng, Nian-Sheng |
| author_sort | Cheng, Nian-Sheng |
| collection | NTU |
| description | The Ergun equation that is widely used in chemical engineering is generalized for describing seepage through the sediment boundaries in this study. Comparisons with the measurements of the hydraulic gradient for flows through packed beds show that the Ergun equation may not be suitable for the transitional zone where both viscous and inertial effects are of the same order of magnitude. The generalized Ergun equation is then used to evaluate the critical shear velocity for incipient sediment motion subject to seepage. The computed results are finally compared to the experimental data and those predicted using the previously proposed approach. |
| first_indexed | 2024-10-01T03:19:28Z |
| format | Journal Article |
| id | ntu-10356/94299 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:19:28Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-10356/942992020-03-07T11:43:42Z Application of Ergun equation to computation of critical shear velocity subject to seepage Cheng, Nian-Sheng School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Water resources The Ergun equation that is widely used in chemical engineering is generalized for describing seepage through the sediment boundaries in this study. Comparisons with the measurements of the hydraulic gradient for flows through packed beds show that the Ergun equation may not be suitable for the transitional zone where both viscous and inertial effects are of the same order of magnitude. The generalized Ergun equation is then used to evaluate the critical shear velocity for incipient sediment motion subject to seepage. The computed results are finally compared to the experimental data and those predicted using the previously proposed approach. Published version 2012-03-22T00:55:48Z 2019-12-06T18:53:49Z 2012-03-22T00:55:48Z 2019-12-06T18:53:49Z 2003 2003 Journal Article Cheng, N. S. (2003). Application of Ergun equation to computation of critical shear velocity subject to seepage. Journal of Irrigation and Drainage Engineering, 129(4), 278-283. 0733-9437 https://hdl.handle.net/10356/94299 http://hdl.handle.net/10220/7652 10.1061/(ASCE)0733-9437(2003)129:4(278) en Journal of irrigation and drainage engineering © 2003 ASCE. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Irrigation and Drainage Engineering, American Society of Civil Engineers. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1061/(ASCE)0733-9437(2003)129:4(278)]. 21 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Civil engineering::Water resources Cheng, Nian-Sheng Application of Ergun equation to computation of critical shear velocity subject to seepage |
| title | Application of Ergun equation to computation of critical shear velocity subject to seepage |
| title_full | Application of Ergun equation to computation of critical shear velocity subject to seepage |
| title_fullStr | Application of Ergun equation to computation of critical shear velocity subject to seepage |
| title_full_unstemmed | Application of Ergun equation to computation of critical shear velocity subject to seepage |
| title_short | Application of Ergun equation to computation of critical shear velocity subject to seepage |
| title_sort | application of ergun equation to computation of critical shear velocity subject to seepage |
| topic | DRNTU::Engineering::Civil engineering::Water resources |
| url | https://hdl.handle.net/10356/94299 http://hdl.handle.net/10220/7652 |
| work_keys_str_mv | AT chengniansheng applicationofergunequationtocomputationofcriticalshearvelocitysubjecttoseepage |