Present address: OCEES International, Inc., Honolulu, Hawaii 96816, USA.
Transport rate of calcareous sand in unidirectional flow
Version of Record online: 25 JUL 2005
Volume 52, Issue 5, pages 1009–1020, October 2005
How to Cite
SMITH, D. A. and CHEUNG, K. F. (2005), Transport rate of calcareous sand in unidirectional flow. Sedimentology, 52: 1009–1020. doi: 10.1111/j.1365-3091.2005.00733.x
- Issue online: 16 AUG 2005
- Version of Record online: 25 JUL 2005
- Manuscript received 28 July 2003; revision accepted 27 April 2005.
- Calcareous sand;
- carbonate sand;
- critical velocity;
- fall velocity;
- flume experiment;
- nominal diameter;
- sediment transport;
- shape factor;
- transport model;
- transport rate
This paper examines the transport of calcareous sand in unidirectional flow and its prediction through existing sediment transport models. A flume experiment of four sand samples collected on Oahu, Hawaii, provides 29 sets of sediment transport data in the bed-form and suspended transport stages. The measured transport data are compared with direct predictions from four energy-based transport models developed for siliceous particles. Corrections for the grain-size, fall velocity, and critical velocity of calcareous sand based on recent research are applied to the models and the results are compared with the direct calculations and measured data. The comparison illustrates the important role particle shape plays in the transport of calcareous sand. All four sediment transport models give consistent predictions and good agreement with the majority of the measured data. Two of the models respond positively to the corrections in both the bed-form and suspended transport stages indicating that such an approach may provide an interim solution for the transport of calcareous sand.