Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous Soil
To investigate the general laws of solute transport in homogeneous and heterogeneous soil,this study conducts column experiments in the laboratory to observe and monitor hydrodynamic dispersion under different conditions.The measured breakthrough curves of solute are fitted and analyzed by the class...
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| Language: | zho |
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Editorial Office of Pearl River
2022-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails?columnId=47640866&Fpath=home&index=0 |
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| _version_ | 1841535947704893440 |
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| author | WANG Da ZHUANG Luwen LIN Kairong FENG Shangchao |
| author_facet | WANG Da ZHUANG Luwen LIN Kairong FENG Shangchao |
| author_sort | WANG Da |
| collection | DOAJ |
| description | To investigate the general laws of solute transport in homogeneous and heterogeneous soil,this study conducts column experiments in the laboratory to observe and monitor hydrodynamic dispersion under different conditions.The measured breakthrough curves of solute are fitted and analyzed by the classical advection-diffusion equation (ADE).The results reveal that the solute concentration has little effect on the hydrodynamic diffusion coefficient in homogeneous soil;however,the flow rate of solute transport can promote hydrodynamic diffusion,namely that a higher flow rate can lead to a larger hydrodynamic diffusion coefficient,and the breakthrough curves can be completed faster.There is a positive correlation between the hydrodynamic diffusion coefficient and the mean particle size of the sand at a certain flow rate.In addition,the scale effect is prominent in the solute transport process in soil;generally,the hydrodynamic diffusion coefficient increases with the traveling distance.Compared with the case of homogeneous soil,the heterogeneity and different layered structures of layered soil have a more significant influence on hydrodynamic dispersion. |
| format | Article |
| id | doaj-art-7af901d4c06547768a791205cabdafc6 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-7af901d4c06547768a791205cabdafc62025-01-15T02:25:40ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352022-01-014347640866Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous SoilWANG DaZHUANG LuwenLIN KairongFENG ShangchaoTo investigate the general laws of solute transport in homogeneous and heterogeneous soil,this study conducts column experiments in the laboratory to observe and monitor hydrodynamic dispersion under different conditions.The measured breakthrough curves of solute are fitted and analyzed by the classical advection-diffusion equation (ADE).The results reveal that the solute concentration has little effect on the hydrodynamic diffusion coefficient in homogeneous soil;however,the flow rate of solute transport can promote hydrodynamic diffusion,namely that a higher flow rate can lead to a larger hydrodynamic diffusion coefficient,and the breakthrough curves can be completed faster.There is a positive correlation between the hydrodynamic diffusion coefficient and the mean particle size of the sand at a certain flow rate.In addition,the scale effect is prominent in the solute transport process in soil;generally,the hydrodynamic diffusion coefficient increases with the traveling distance.Compared with the case of homogeneous soil,the heterogeneity and different layered structures of layered soil have a more significant influence on hydrodynamic dispersion.http://www.renminzhujiang.cn/thesisDetails?columnId=47640866&Fpath=home&index=0hydrodynamic dispersionsolute transportheterogeneous soilbreakthrough curve |
| spellingShingle | WANG Da ZHUANG Luwen LIN Kairong FENG Shangchao Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous Soil Renmin Zhujiang hydrodynamic dispersion solute transport heterogeneous soil breakthrough curve |
| title | Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous Soil |
| title_full | Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous Soil |
| title_fullStr | Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous Soil |
| title_full_unstemmed | Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous Soil |
| title_short | Study of Hydrodynamic Dispersion Laws in Homogeneous and Heterogeneous Soil |
| title_sort | study of hydrodynamic dispersion laws in homogeneous and heterogeneous soil |
| topic | hydrodynamic dispersion solute transport heterogeneous soil breakthrough curve |
| url | http://www.renminzhujiang.cn/thesisDetails?columnId=47640866&Fpath=home&index=0 |
| work_keys_str_mv | AT wangda studyofhydrodynamicdispersionlawsinhomogeneousandheterogeneoussoil AT zhuangluwen studyofhydrodynamicdispersionlawsinhomogeneousandheterogeneoussoil AT linkairong studyofhydrodynamicdispersionlawsinhomogeneousandheterogeneoussoil AT fengshangchao studyofhydrodynamicdispersionlawsinhomogeneousandheterogeneoussoil |