Effect of upward seepage on bedload transport rate
The paper presents an investigation of injection effects on the bedload transport rate. According to dimensional analysis, two dimensionless groups, an Einstein's parameter group and a modified densimetric Froude number group, were chosen to examine how injection affects the bedload transport r...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2014-04-01
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| Series: | Water Science and Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674237015302805 |
| _version_ | 1818480506922074112 |
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| author | Xiao-xie Liu Yee-meng Chiew |
| author_facet | Xiao-xie Liu Yee-meng Chiew |
| author_sort | Xiao-xie Liu |
| collection | DOAJ |
| description | The paper presents an investigation of injection effects on the bedload transport rate. According to dimensional analysis, two dimensionless groups, an Einstein's parameter group and a modified densimetric Froude number group, were chosen to examine how injection affects the bedload transport rate. Experimental studies were conducted in an open-channel flume with an upward seepage zone. The sediment particles used for the test were 0.9 mm in diameter. The experimental results show that an increase in the injection velocity causes a reduction in the shear velocity excess, which is defined as the difference between the shear and critical shear velocities, leading to a reduction in the bedload transport rate. The equation for predicting the bedload transport rate in the presence of upward seepage was derived empirically. The proposed prediction method is suitable for engineering practice, since it only requires the undisturbed flow condition, properties of sediment particles, and the injection velocity. |
| first_indexed | 2024-12-10T11:24:35Z |
| format | Article |
| id | doaj.art-289263c325be44bdb1088e1cd2c4fe47 |
| institution | Directory Open Access Journal |
| issn | 1674-2370 |
| language | English |
| last_indexed | 2024-12-10T11:24:35Z |
| publishDate | 2014-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Science and Engineering |
| spelling | doaj.art-289263c325be44bdb1088e1cd2c4fe472022-12-22T01:50:46ZengElsevierWater Science and Engineering1674-23702014-04-017220821710.3882/j.issn.1674-2370.2014.02.008Effect of upward seepage on bedload transport rateXiao-xie Liu0Yee-meng Chiew1State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, P. R. ChinaSchool of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, SingaporeThe paper presents an investigation of injection effects on the bedload transport rate. According to dimensional analysis, two dimensionless groups, an Einstein's parameter group and a modified densimetric Froude number group, were chosen to examine how injection affects the bedload transport rate. Experimental studies were conducted in an open-channel flume with an upward seepage zone. The sediment particles used for the test were 0.9 mm in diameter. The experimental results show that an increase in the injection velocity causes a reduction in the shear velocity excess, which is defined as the difference between the shear and critical shear velocities, leading to a reduction in the bedload transport rate. The equation for predicting the bedload transport rate in the presence of upward seepage was derived empirically. The proposed prediction method is suitable for engineering practice, since it only requires the undisturbed flow condition, properties of sediment particles, and the injection velocity.http://www.sciencedirect.com/science/article/pii/S1674237015302805upward seepagebedload transport rateshear velocityshear stressopen-channel flow |
| spellingShingle | Xiao-xie Liu Yee-meng Chiew Effect of upward seepage on bedload transport rate Water Science and Engineering upward seepage bedload transport rate shear velocity shear stress open-channel flow |
| title | Effect of upward seepage on bedload transport rate |
| title_full | Effect of upward seepage on bedload transport rate |
| title_fullStr | Effect of upward seepage on bedload transport rate |
| title_full_unstemmed | Effect of upward seepage on bedload transport rate |
| title_short | Effect of upward seepage on bedload transport rate |
| title_sort | effect of upward seepage on bedload transport rate |
| topic | upward seepage bedload transport rate shear velocity shear stress open-channel flow |
| url | http://www.sciencedirect.com/science/article/pii/S1674237015302805 |
| work_keys_str_mv | AT xiaoxieliu effectofupwardseepageonbedloadtransportrate AT yeemengchiew effectofupwardseepageonbedloadtransportrate |