Mohammad Vaghefi

Rivers are regarded as the most important origins of human civilization. In present research and by using a numerical model, some analyses were performed on flows around a T shape spur dike and a support structure located at its upstream under different wing to length ratios of T shape spur dike in order of 0.25, 0.50, 0.75 and 1. In order to verify numerical model, physical model data was used in presence of a single T shape spur dike. Results from numerical model are desirably in agreement with those of physical one. In this research, all hydraulic parameters of flows, streamlines and dimensions of flow separation zones were studied in order to select the most practical model.