Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, China
The current study investigates the impact of burrowing activities by crab species in the tidal flats of the Yellow River Delta in China on the hydraulic resistance characteristics of water flow, particularly the regulatory effect of biological activity on hydraulic parameters. Although there are man...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-02-01
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| Series: | International Journal of Sediment Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1001627924001264 |
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| author | Wenbo Zhu Yan Lu Chengyang Zhou Yongjun Lu Pan Wu Liqin Zuo Tingjie Huang Huaiqian Xiao |
| author_facet | Wenbo Zhu Yan Lu Chengyang Zhou Yongjun Lu Pan Wu Liqin Zuo Tingjie Huang Huaiqian Xiao |
| author_sort | Wenbo Zhu |
| collection | DOAJ |
| description | The current study investigates the impact of burrowing activities by crab species in the tidal flats of the Yellow River Delta in China on the hydraulic resistance characteristics of water flow, particularly the regulatory effect of biological activity on hydraulic parameters. Although there are many models that attempt to describe the resistance to water flow, these models tend to ignore the influence of such things as biological structures, geomorphological features, and artificial constructs in complex natural water bodies, resulting in insufficient predictive accuracy of the resistance coefficients and Manning's roughness coefficients. In this paper, a new theoretical model is developed to achieve the construction of a model for predicting the hydrodynamic resistance characteristics of crab-hole regions affected by water flow by introducing a cross-sectional area correction coefficient to improve the accuracy of the calculation. The experimental results show that there is a significant positive correlation between the drag coefficient, and the hydraulic radius, and cave density, and a negative correlation with the Reynolds number, and the modification for the sidewall and bed effect greatly improves the representativeness of the measured data. In addition, a new theoretical model is proposed to improve the prediction of drag and Manning's roughness coefficient, and the prediction results are in good agreement with the measured data. The improved drag coefficient calculation model proposed in this paper improves the applicability to the research object and helps to establish a more accurate hydrodynamic model. |
| format | Article |
| id | doaj-art-9fefde2188a349b79d22498c2555fc8f |
| institution | Kabale University |
| issn | 1001-6279 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Journal of Sediment Research |
| spelling | doaj-art-9fefde2188a349b79d22498c2555fc8f2025-01-12T05:24:19ZengKeAi Communications Co., Ltd.International Journal of Sediment Research1001-62792025-02-01401182191Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, ChinaWenbo Zhu0Yan Lu1Chengyang Zhou2Yongjun Lu3Pan Wu4Liqin Zuo5Tingjie Huang6Huaiqian Xiao7The National Key Laboratory of Water Disaster Prevention, Nanjing Hydraulic Research Institute, Nanjing 210029, ChinaThe National Key Laboratory of Water Disaster Prevention, Nanjing Hydraulic Research Institute, Nanjing 210029, China; Corresponding authors.Jiangsu Huaishuxin River Administration Office, Huaian 223005, ChinaThe National Key Laboratory of Water Disaster Prevention, Nanjing Hydraulic Research Institute, Nanjing 210029, China; Corresponding authors.The National Key Laboratory of Water Disaster Prevention, Nanjing Hydraulic Research Institute, Nanjing 210029, ChinaThe National Key Laboratory of Water Disaster Prevention, Nanjing Hydraulic Research Institute, Nanjing 210029, ChinaThe National Key Laboratory of Water Disaster Prevention, Nanjing Hydraulic Research Institute, Nanjing 210029, ChinaJiangsu Huaishuxin River Administration Office, Huaian 223005, ChinaThe current study investigates the impact of burrowing activities by crab species in the tidal flats of the Yellow River Delta in China on the hydraulic resistance characteristics of water flow, particularly the regulatory effect of biological activity on hydraulic parameters. Although there are many models that attempt to describe the resistance to water flow, these models tend to ignore the influence of such things as biological structures, geomorphological features, and artificial constructs in complex natural water bodies, resulting in insufficient predictive accuracy of the resistance coefficients and Manning's roughness coefficients. In this paper, a new theoretical model is developed to achieve the construction of a model for predicting the hydrodynamic resistance characteristics of crab-hole regions affected by water flow by introducing a cross-sectional area correction coefficient to improve the accuracy of the calculation. The experimental results show that there is a significant positive correlation between the drag coefficient, and the hydraulic radius, and cave density, and a negative correlation with the Reynolds number, and the modification for the sidewall and bed effect greatly improves the representativeness of the measured data. In addition, a new theoretical model is proposed to improve the prediction of drag and Manning's roughness coefficient, and the prediction results are in good agreement with the measured data. The improved drag coefficient calculation model proposed in this paper improves the applicability to the research object and helps to establish a more accurate hydrodynamic model.http://www.sciencedirect.com/science/article/pii/S1001627924001264Crab burrowsHydraulic radiusCross-sectional area correction factorDrag coefficientManning's roughness coefficient |
| spellingShingle | Wenbo Zhu Yan Lu Chengyang Zhou Yongjun Lu Pan Wu Liqin Zuo Tingjie Huang Huaiqian Xiao Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, China International Journal of Sediment Research Crab burrows Hydraulic radius Cross-sectional area correction factor Drag coefficient Manning's roughness coefficient |
| title | Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, China |
| title_full | Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, China |
| title_fullStr | Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, China |
| title_full_unstemmed | Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, China |
| title_short | Experimental investigation into flow resistance of large benthic crab burrows in the Yellow River Delta, China |
| title_sort | experimental investigation into flow resistance of large benthic crab burrows in the yellow river delta china |
| topic | Crab burrows Hydraulic radius Cross-sectional area correction factor Drag coefficient Manning's roughness coefficient |
| url | http://www.sciencedirect.com/science/article/pii/S1001627924001264 |
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