کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6413332 1629937 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mathematical model on grain-size distribution in suspension over sand-gravel bed
ترجمه فارسی عنوان
مدل ریاضی بر روی توزیع اندازه دانه در تعلیق روی بستر شن و ماسه
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


- Modeling on grain-size distribution in suspension over sand-gravel bed has been done.
- Stratification and hindered settling effect have been included.
- Effect of particle-particle interaction is included in the computed reference level.
- Effect of different probability is considered in the computed reference concentration.
- The proposed model is verified with existing experimental data.

SummaryIn this study, the grain-size distribution in suspension over a sand-gravel bed in an open channel turbulent flow is investigated from theoretical point of view. On the basis of diffusion equation, a model on grain-size distribution is developed incorporating the effect of stratification and hindered settling due to increased suspension concentration. The hydrodynamic diffusion related to particle-particle interaction is considered in the computation of reference level and the influence of incipient motion probability, non-ceasing probability and pick-up probability of the sediment particles are considered in the computation of reference concentration. Due to inclusion of several factors, the proposed model predicts well the grain-size distribution of suspended load when compared with the experimental data and also shows its prediction superiority with respect to other existing models.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 511, 16 April 2014, Pages 640-647
نویسندگان
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