| CRITICAL CONDITION FOR THE INITIATION OF SUSPENSION |
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| 作者姓名： | CHENG Niansheng and ZHU Lijun Senior engineer Nanjing Hydraulic Research Institute China Engineer Nanjing Hydraulic Research Institute China |
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| 作者单位： | CHENG Niansheng and ZHU Lijun Senior engineer，Nanjing Hydraulic Research Institute，China Engineer，Nanjing Hydraulic Research Institute，China |
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| 摘 要： | L INTRODUCTIONSediment particles move either as bed load or as suspended load, depending on thecharacteristics of flow condition and on the properties of the sediment particlethemselves. Exchange between bed load and bed material takes place directly, while thesuspended load, under general conditions, can hardly interact with the stationary bedwithout the bed load as a medium. It is necessary to take into full account theinteractions of suspended load, bed load and bed material when bed d…
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CRITICAL CONDITION FOR THE INITIATION OF SUSPENSION |
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| CHENG Niansheng and ZHU Lijun Senior engineer,Nanjing Hydraulic Research Institute,China Engineer,Nanjing Hydraulic Research Institute,China.CRITICAL CONDITION FOR THE INITIATION OF SUSPENSION[J].International Journal of Sediment Research,1993(3). |
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| Authors: | CHENG Niansheng and ZHU Lijun Senior engineer Nanjing Hydraulic Research Institute China Engineer Nanjing Hydraulic Research Institute China |
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| Abstract: | Channel bed deformation and sediment transport result from the exchanges among various forms of sediment movement. It is significant to take into account the interactions of suspended load, bed load and movable bed to explore the mechanism of bed changes and develop better modelling methods. Considering the influences of the near-bed turbulence on the critical condition of suspending processes of sediment particles, theoretical criterion is presented according to the concept of probability of suspension. In addition, several existing formulae are thus analysed and compared with each other. |
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| Keywords: | Suspension bed load suspended load near-bed turbulence bed material Viscous sublayer burst phenomena probability |
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