Water Science and Engineering 2008, 1(1) 37-43  DOI:   10.3882/j.issn.1674-2370.2008.01.005   ISSN: 1674-2370 CN: 32-1785/TV

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settling velocity
spherical particle
sediment particle
sediment transport
trial-and-error metho
Song Zhiyao
Wu Tingting
Xu Fumin
Li Ruijie
Article by
Article by
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A simple formula for predicting settling velocity of sediment particles

Song Zhiyao1,2,3; Wu Tingting1,2; Xu Fumin2,3; Li Ruijie2,3

1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P. R. China
2. College of Ocean, Hohai University, Nanjing 210098, P. R. China
3. Key Laboratory of Coastal Disaster and Defence, Ministry of Education, Hohai University, Nanjing


Based on the general relationship described by Cheng between the drag coefficient and the Reynolds number of a particle, a new relationship between the Reynolds number and a dimensionless particle parameter is proposed. Using a trial-and-error procedure to minimize errors, the coefficients were determined and a formula was developed for predicting the settling velocity of natural sediment particles. This formula has higher prediction accuracy than other published formulas and it is applicable to all Reynolds numbers less than 2×105.

Keywords settling velocity   spherical particle   sediment particle   sediment transport   trial-and-error metho  
Received 2009-01-11 Revised 2009-03-02 Online:  
DOI: 10.3882/j.issn.1674-2370.2008.01.005
Corresponding Authors: Song Zhiyao
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