| Rheological Properties and Incipient Motion of Cohesive Sediment in the Haine Estuary of China |
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| 作者姓名： | 白玉川 NG Chiu-on 沈涣庭 王尚毅 |
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| 作者单位： | Institute for Sedimentation on River and Coast Engineering，Tianjin University，Tianjin，300072，China，Department of Mechanical Engineering，The University of Hong Kong，Hong Kong，China，The State Key Laboratory of Estuarine and Coastal Research，East China Normal University，Shanghai 200062，China，Institute for Sedimentation on River and Coast Engineering，Tianjin University，Tianjin，300072，China |
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| 摘 要： | The Haihe cohesive sediment, which is typical in China, is studied systematically for its basic physical and incipient motion properties. Following the requirements of dredging works in the Haihe Estuary, cohesive sediment samples were taken from three locations. Laboratory experiments were conducted to delermine the rheological properties of these samples and to examine the incipient motion of the cohesive sediment. it is found that the cohesive sediment has an obvious yield stress τb, which increases with the mud density in a manner of an exponential function, and so does the viscosity parameter η. The cohesive sediment behaves like a Bingham fluid when its density is below 1. 38 - 1 .40 g/cm3 , and when denser than these values, it may become a power-law fluid. The incipient motion experiment also revealed that the incipient velocity of the cohesive sediment increases with the density in an exponential manner. Therefore, the incipient motion is primarily related to the density, which is different f
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Rheological Properties and Incipient Motion of Cohesive Sediment in the Haine Estuary of China |
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| BAI Yu-chuan NG Chiu-on,SHEN Huan-ting and WANG Shang-yi
Institute for Sedimentation on River and Coast Engineering,Tianjin University,Tianjin,China.Rheological Properties and Incipient Motion of Cohesive Sediment in the Haine Estuary of China[J].China Ocean Engineering,2002(4). |
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| Authors: | BAI Yu-chuan NG Chiu-on SHEN Huan-ting and WANG Shang-yi
Institute for Sedimentation on River and Coast Engineering Tianjin University Tianjin China |
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| Institution: | BAI Yu-chuan NG Chiu-on,SHEN Huan-ting and WANG Shang-yi
Institute for Sedimentation on River and Coast Engineering,Tianjin University,Tianjin,300072,China Department of Mechanical Engineering,The University of Hong Kong,Hong Kong,China
The State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China |
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| Abstract: | |
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| Keywords: | incipient motion rheological properties cohesive sediment estuary and coast |
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