A numerical model for predicting sediment exclusion at intakes

Abstract

皇冠体育app development of a numerical model for predicting flow patterns and sediment movement at intakes is presented. 皇冠体育app model is based on a widely used software package which models fluid flow in three dimensions. 皇冠体育app report describes how the package has been developed for the prediction of sediment exclusion at river intakes.

皇冠体育app approach used computational fluid dynamics (CFD) software to develop the numerical model. 皇冠体育app CFD code \"PHOENICS\" was chosen for the study. This report presents the work to develop the model since 1989.

A description of the model and its application to intakes is presented. 皇冠体育app model was applied at two irrigation intakes, where field data was collected:

  • 皇冠体育app intake to the Agno River Irrigation system in Central Luzon, the Philippines

  • 皇冠体育app intake to the Kapunga Rice Project in southern Tanzania

皇冠体育app model results are compared to the field data and an assessment is made of the sensitivity of model predictions to the assumptions required to run the model and to uncertainties in the input data.

Conclusions and recommendations for further application of the model are presented. It was found that the model, as described in this report, is primarily suited to assess modifications to existing intakes rather than the design of new intakes.

Citation

HR Wallingford, UK. 56 pp.

Updates to this page

Published 1 January 1995