EXPERIMENTAL STUDY OF FLOW BEHAVIOR AROUND SUBMERGED SPUR-DIKE ON RIGID BED

Abstract

This paper presents the results of an experimental study of flow behavior around submerged dikes on rigid bed. The studies of flow behavior including water surface profiles and velocity profiles around a single dike with different cases were carried out with steady uniform flow on smooth rigid bed. It is observed that, the disturbance occurred in the water surface profiles and the velocity profiles for a short distance upstream the dike and for a longer distance downstream the dike. The flow patterns around fully-submerged dike and just-submerged dike had a different phenomenon such as: A rise in the water surface level upstream the dike and a drop in the water surface level downstream the dike. The separation flow zones were different in each case depending on the kind of the dike.